Chalcack Downloads & RevenueChalcack: Your Study Crush · App Store & Google Play
Chalcack: Your Study Crush gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Chalcack: Your Study Crush by Dong Hae Jang is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
Chalcack: Your Study Crush update history & changes
Last change · 54 events since 2 Jul 2025Full timeline ↓📦iOSUpdated to version 1.2.83📦iOSUpdated to version 1.2.82✏️iOSDescription updated📦AndroidUpdated to version 1.2.37🚀iOSNow shown next to AI Tutor: Homework Helper, Socratic Owl : Homework Helper, A+AI Math Helper & AI Homework +5 more📦AndroidUpdated to version 1.2.24✏️AndroidShort description updated✏️AndroidNew screenshots📈iOSEntered the top 10📈AndroidEntered the top 100🆕AndroidFirst spotted by AppInsider🆕iOSFirst spotted by AppInsider🆕AndroidReleased on Google Play🆕iOSReleased on the App Store
Full timeline · 54 events
- 📦Chalcack: Your Study Crush updated to version 1.2.83iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.82iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.80iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - ✏️Chalcack: Your Study Crush: description updatediOS· KR
- 📦Chalcack: Your Study Crush updated to version 1.2.37AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.79iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.78iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.77iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.76iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 🚀Chalcack: Your Study Crush: now shown next to AI Tutor: Homework Helper, Socratic Owl : Homework Helper, A+AI Math Helper & AI Homework +5 moreiOSthe store's “similar apps” for it changed: who it's seen as competing with
- ✏️Chalcack: Your Study Crush: app got biggeriOS41 MB → 48 MB (+17%)
- 📦Chalcack: Your Study Crush updated to version 1.2.75iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - ✏️Chalcack: Your Study Crush added 1 languageiOS+ ES
- 📦Chalcack: Your Study Crush updated to version 1.2.73iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.72iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - ✏️Chalcack: Your Study Crush: app got smalleriOS52 MB → 41 MB (-22%)
- 📦Chalcack: Your Study Crush updated to version 1.2.71iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.70iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.24AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.23AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.21AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.69iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - ✏️Chalcack: Your Study Crush: short description updatedAndroid· US
- ✏️Chalcack: Your Study Crush: new screenshotsAndroid12 screenshots (was 12) · US
- ✏️Chalcack: Your Study Crush: renamedAndroidChalcack: Homework, unstuck. → Chalcack: Your Study Crush · US
- 📦Chalcack: Your Study Crush updated to version 1.2.68iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.20AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.67iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.19AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.66iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.65iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.62iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.16AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.61iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.60iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.15AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.59iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush: now updating weeklyiOS4 updates in 30 days, after a quiet two months
- 📦Chalcack: Your Study Crush updated to version 1.2.14AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush: now updating weeklyAndroid4 updates in 30 days, after a quiet two months
- 📦Chalcack: Your Study Crush updated to version 1.2.12AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.13AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.58iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.11AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush updated to version 1.2.57iOS찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요! - 📦Chalcack: Your Study Crush updated to version 1.2.9AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📈Chalcack: Your Study Crush entered the top 10iOSTop Free · Education · KR
- 📈Chalcack: Your Study Crush entered the top 100AndroidTop Grossing · Education · KR
- 🆕Chalcack: Your Study Crush first spotted by AppInsiderAndroidSouth Korea
- 🆕Chalcack: Your Study Crush first spotted by AppInsideriOS#36 in Top Grossing · Education · South Korea
- 📦Chalcack: Your Study Crush version 1.2.56iOSThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 📦Chalcack: Your Study Crush version 1.2.8AndroidThanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements. - 🆕Chalcack: Your Study Crush released on Google PlayAndroid
- 🆕Chalcack: Your Study Crush released on the App StoreiOS
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
2.6k ratings, both stores
Measured
Best rank now
#9
App Store · 
Education Free
Education FreeMeasured
New ratings a week
63
▲ +40% vs the 2 weeks before
Measured
Chalcack: Your Study Crush at a glance
AI summary written from our chart and store data, 2026-11-08. It can be wrong: check the numbers above.
An AI-powered educational tool that uses customizable virtual companions to provide step-by-step homework assistance and emotional encouragement for students. The app is currently ranking #4 in the South Korean Education Free category and #37 in Grossing, indicating strong user adoption and effective monetization within its local market.
Similar apps: Photomath, Gauthmath, Socratic by Google
App Store
App details
App ID
6747833381
Publisher
Dong Hae Jang
Publisher country
South Korea
On the store since
Jul 2025
1 year on the store
Minimum OS
iOS 18.5+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN KO ES
Size
51 MB
Also listed in
Photo & Video
App privacy Measured
Chalcack: Your Study Crush’s App Store privacy label declares 3 data categories used to track you across other companies’ apps and websites, 6 linked to your identity and 1 collected anonymously.
Used to track you
3
Linked to you
6
Not linked to you
1
Tracks you via
PPurchasesIIdentifiersUUsage Data
Linked to your identity
Not linked to you
IIdentifiers
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Google Play
App details
App ID
com.andrewdhjang.chalcack
Publisher
장동해
Publisher country
South Korea
Content rating
Everyone
Chalcack: Your Study Crush downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | 1k+ | 100k+ |
| Google Play | 100+ | 50k+ Measured |
| Total | 1k+ Confidence | 100k+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where Chalcack: Your Study Crush's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Chalcack: Your Study Crush makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchasesAds · 2 ad networks
Subscriptions
/mo
of revenue
Ads
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | Premium subscription subscription | |
| 2 | Monthly Pro (Special Offer) subscription | |
| 3 | Yearly Pro (Special Offer) subscription | |
| 4 | Yearly Premium subscription subscription |
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #9 Education Free | 1 of 30 countries | – | – |
| Google Play | #163 Education Free | 1 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisNew ratings a week
63
▲ +40% vs the 2 weeks before
Recent ratings
4.7★
vs 4.7★ lifetime
Review momentum
88/100
faster than 94% of Education apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.7 ★ | 2.6k |
| Google Play | 4.5 ★ | – |
| Both stores | 4.7 ★ weighted by ratings | 2.6k |
What users say about Chalcack: Your Study Crush
From recent reviews.
About Chalcack: Your Study Crush
Chalcack is an AI homework helper: snap a photo of any problem and the character you picked explains every step, in their own voice. Free for 5 problems a day.
Snap math, science, reading or history homework, handwritten or printed. Chalcack gives you the answer, a short summary, every step, and the concept the problem tests. Stuck on a step? Ask your character right there, and keep asking until it clicks. More than 180,000 students study with Chalcack.
Study with your crush, not a cold answer key.
■ HOW IT WORKS
1. Snap the problem: handwriting, textbooks, worksheets and practice tests all work.
2. See the answer and why: every step, plus the concept behind it.
3. Ask about any step in the same thread.
4. Review before the test: solved problems are saved by subject.
■ YOUR CHARACTER, YOUR TUTOR
• Pick from 7,900+ public characters made by students.
• Make your own with a photo, a name and a personality.
• Share it with a code and study with the same character as your friends.
• Every solution and answer comes in your character's voice.
■ SUBJECTS
• Math: pre-algebra, Algebra I & II, geometry, trigonometry, precalculus, calculus, statistics, word problems and proofs. Reads graphs and figures too.
• Science: physics, chemistry, biology, earth science, with formulas and units in every step.
• Reading & writing: literary devices, main idea, evidence, grammar, essay structure.
• English: grammar, vocabulary, reading passages.
• History & social studies: U.S. and world history, government, geography, economics.
• Test prep: SAT®, ACT® and AP® style questions.
■ FREQUENTLY ASKED QUESTIONS
Is Chalcack free?
Yes. You get 5 problems and 20 questions free every day, and can watch an ad for more. PRO gives unlimited problems and questions with no ads.
Does it read handwritten homework?
Yes. Snap equations from your notebook or a problem you're halfway through. Graphs, tables and geometry figures work too.
Won't I just copy the answer?
Every answer shows the reason for each step, and you can keep asking about any step. Understand it, then try the problem again yourself.
Does it explain wrong answer choices?
Yes. It shows why the right answer is right and why each other choice doesn't fit.
Can I make my own character?
Yes. Choose a photo, a name and a personality. Keep it private or make it public for other students.
Can AI make mistakes?
Sometimes. If an answer looks off, ask your character to double-check, or report it from the solution screen.
■ SUBSCRIPTION INFORMATION
• Chalcack PRO: unlimited problems and questions, no ads.
• PRO Monthly: $9.99 per month. PRO Yearly: $79.99 per year (about $6.67 a month). Prices may vary by country.
• Payment is charged to your Apple ID account at confirmation of purchase.
• The subscription renews automatically unless canceled at least 24 hours before the end of the current period.
• Manage your subscription and auto-renewal in your App Store account settings.
Privacy Policy: https://www.chalcack.com/priva
Snap math, science, reading or history homework, handwritten or printed. Chalcack gives you the answer, a short summary, every step, and the concept the problem tests. Stuck on a step? Ask your character right there, and keep asking until it clicks. More than 180,000 students study with Chalcack.
Study with your crush, not a cold answer key.
■ HOW IT WORKS
1. Snap the problem: handwriting, textbooks, worksheets and practice tests all work.
2. See the answer and why: every step, plus the concept behind it.
3. Ask about any step in the same thread.
4. Review before the test: solved problems are saved by subject.
■ YOUR CHARACTER, YOUR TUTOR
• Pick from 7,900+ public characters made by students.
• Make your own with a photo, a name and a personality.
• Share it with a code and study with the same character as your friends.
• Every solution and answer comes in your character's voice.
■ SUBJECTS
• Math: pre-algebra, Algebra I & II, geometry, trigonometry, precalculus, calculus, statistics, word problems and proofs. Reads graphs and figures too.
• Science: physics, chemistry, biology, earth science, with formulas and units in every step.
• Reading & writing: literary devices, main idea, evidence, grammar, essay structure.
• English: grammar, vocabulary, reading passages.
• History & social studies: U.S. and world history, government, geography, economics.
• Test prep: SAT®, ACT® and AP® style questions.
■ FREQUENTLY ASKED QUESTIONS
Is Chalcack free?
Yes. You get 5 problems and 20 questions free every day, and can watch an ad for more. PRO gives unlimited problems and questions with no ads.
Does it read handwritten homework?
Yes. Snap equations from your notebook or a problem you're halfway through. Graphs, tables and geometry figures work too.
Won't I just copy the answer?
Every answer shows the reason for each step, and you can keep asking about any step. Understand it, then try the problem again yourself.
Does it explain wrong answer choices?
Yes. It shows why the right answer is right and why each other choice doesn't fit.
Can I make my own character?
Yes. Choose a photo, a name and a personality. Keep it private or make it public for other students.
Can AI make mistakes?
Sometimes. If an answer looks off, ask your character to double-check, or report it from the solution screen.
■ SUBSCRIPTION INFORMATION
• Chalcack PRO: unlimited problems and questions, no ads.
• PRO Monthly: $9.99 per month. PRO Yearly: $79.99 per year (about $6.67 a month). Prices may vary by country.
• Payment is charged to your Apple ID account at confirmation of purchase.
• The subscription renews automatically unless canceled at least 24 hours before the end of the current period.
• Manage your subscription and auto-renewal in your App Store account settings.
Privacy Policy: https://www.chalcack.com/priva
Chalcack: Your Study Crush App Store
찰칵: 내 최애가 내 과외쌤
Chalcack: Your Study Crush gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Chalcack: Your Study Crush is #9 in Education Free in South Korea and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperDong Hae Jang
CategoryEducation
PriceFree
Released
Rating★ 4.7 (2.6k)
Version1.2.83
Age rating4+
First seen by us 25 Sep 2026
25 Sep 2026Installs (est.)100k+ worldwide
Rating
4.7 ★
2.6k ratings
Measured
Best rank now
#9
Education FreeMeasured
New ratings a week
63
▲ +40% vs the 2 weeks before
Measured
Chalcack: Your Study Crush at a glance
AI summary written from our chart and store data, 2026-11-08. It can be wrong: check the numbers above.
An AI-powered educational tool that uses customizable virtual companions to provide step-by-step homework assistance and emotional encouragement for students. The app is currently ranking #4 in the South Korean Education Free category and #37 in Grossing, indicating strong user adoption and effective monetization within its local market.
Similar apps: Photomath, Gauthmath, Socratic by Google
Chalcack: Your Study Crush on the App Store
App details
App ID
6747833381
Publisher
Dong Hae Jang
Publisher country
South Korea
On the store since
Jul 2025
1 year on the store
Minimum OS
iOS 18.5+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN KO ES
Size
51 MB
Also listed in
Photo & Video
App privacy Measured
Chalcack: Your Study Crush’s App Store privacy label declares 3 data categories used to track you across other companies’ apps and websites, 6 linked to your identity and 1 collected anonymously.
Used to track you
3
Linked to you
6
Not linked to you
1
Tracks you via
PPurchasesIIdentifiersUUsage Data
Linked to your identity
Not linked to you
IIdentifiers
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Chalcack: Your Study Crush downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Chalcack: Your Study Crush's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Chalcack: Your Study Crush makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchasesAds · 2 ad networks
Subscriptions
/mo
of revenue
Ads
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | Premium subscription subscription | |
| 2 | Monthly Pro (Special Offer) subscription | |
| 3 | Yearly Pro (Special Offer) subscription | |
| 4 | Yearly Premium subscription subscription |
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | EducationFree | #9 |
| South Korea | EducationGrossing | #47 |
Apps near Chalcack: Your Study Crush on the chart
Education Free, around #9.
Ratings
App Store, worldwide.
Rating
4.7 ★
2.6k ratings
Measured
Ratings
2.6k
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
63
▲ +40% vs the 2 weeks before
Recent ratings
4.7★
vs 4.7★ lifetime
Review momentum
88/100
faster than 94% of Education apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Chalcack: Your Study Crush
From recent reviews.
About Chalcack: Your Study Crush
Chalcack is an AI homework helper: snap a photo of any problem and the character you picked explains every step, in their own voice. Free for 5 problems a day.
Snap math, science, reading or history homework, handwritten or printed. Chalcack gives you the answer, a short summary, every step, and the concept the problem tests. Stuck on a step? Ask your character right there, and keep asking until it clicks. More than 180,000 students study with Chalcack.
Study with your crush, not a cold answer key.
■ HOW IT WORKS
1. Snap the problem: handwriting, textbooks, worksheets and practice tests all work.
2. See the answer and why: every step, plus the concept behind it.
3. Ask about any step in the same thread.
4. Review before the test: solved problems are saved by subject.
■ YOUR CHARACTER, YOUR TUTOR
• Pick from 7,900+ public characters made by students.
• Make your own with a photo, a name and a personality.
• Share it with a code and study with the same character as your friends.
• Every solution and answer comes in your character's voice.
■ SUBJECTS
• Math: pre-algebra, Algebra I & II, geometry, trigonometry, precalculus, calculus, statistics, word problems and proofs. Reads graphs and figures too.
• Science: physics, chemistry, biology, earth science, with formulas and units in every step.
• Reading & writing: literary devices, main idea, evidence, grammar, essay structure.
• English: grammar, vocabulary, reading passages.
• History & social studies: U.S. and world history, government, geography, economics.
• Test prep: SAT®, ACT® and AP® style questions.
■ FREQUENTLY ASKED QUESTIONS
Is Chalcack free?
Yes. You get 5 problems and 20 questions free every day, and can watch an ad for more. PRO gives unlimited problems and questions with no ads.
Does it read handwritten homework?
Yes. Snap equations from your notebook or a problem you're halfway through. Graphs, tables and geometry figures work too.
Won't I just copy the answer?
Every answer shows the reason for each step, and you can keep asking about any step. Understand it, then try the problem again yourself.
Does it explain wrong answer choices?
Yes. It shows why the right answer is right and why each other choice doesn't fit.
Can I make my own character?
Yes. Choose a photo, a name and a personality. Keep it private or make it public for other students.
Can AI make mistakes?
Sometimes. If an answer looks off, ask your character to double-check, or report it from the solution screen.
■ SUBSCRIPTION INFORMATION
• Chalcack PRO: unlimited problems and questions, no ads.
• PRO Monthly: $9.99 per month. PRO Yearly: $79.99 per year (about $6.67 a month). Prices may vary by country.
• Payment is charged to your Apple ID account at confirmation of purchase.
• The subscription renews automatically unless canceled at least 24 hours before the end of the current period.
• Manage your subscription and auto-renewal in your App Store account settings.
Privacy Policy: https://www.chalcack.com/priva
Snap math, science, reading or history homework, handwritten or printed. Chalcack gives you the answer, a short summary, every step, and the concept the problem tests. Stuck on a step? Ask your character right there, and keep asking until it clicks. More than 180,000 students study with Chalcack.
Study with your crush, not a cold answer key.
■ HOW IT WORKS
1. Snap the problem: handwriting, textbooks, worksheets and practice tests all work.
2. See the answer and why: every step, plus the concept behind it.
3. Ask about any step in the same thread.
4. Review before the test: solved problems are saved by subject.
■ YOUR CHARACTER, YOUR TUTOR
• Pick from 7,900+ public characters made by students.
• Make your own with a photo, a name and a personality.
• Share it with a code and study with the same character as your friends.
• Every solution and answer comes in your character's voice.
■ SUBJECTS
• Math: pre-algebra, Algebra I & II, geometry, trigonometry, precalculus, calculus, statistics, word problems and proofs. Reads graphs and figures too.
• Science: physics, chemistry, biology, earth science, with formulas and units in every step.
• Reading & writing: literary devices, main idea, evidence, grammar, essay structure.
• English: grammar, vocabulary, reading passages.
• History & social studies: U.S. and world history, government, geography, economics.
• Test prep: SAT®, ACT® and AP® style questions.
■ FREQUENTLY ASKED QUESTIONS
Is Chalcack free?
Yes. You get 5 problems and 20 questions free every day, and can watch an ad for more. PRO gives unlimited problems and questions with no ads.
Does it read handwritten homework?
Yes. Snap equations from your notebook or a problem you're halfway through. Graphs, tables and geometry figures work too.
Won't I just copy the answer?
Every answer shows the reason for each step, and you can keep asking about any step. Understand it, then try the problem again yourself.
Does it explain wrong answer choices?
Yes. It shows why the right answer is right and why each other choice doesn't fit.
Can I make my own character?
Yes. Choose a photo, a name and a personality. Keep it private or make it public for other students.
Can AI make mistakes?
Sometimes. If an answer looks off, ask your character to double-check, or report it from the solution screen.
■ SUBSCRIPTION INFORMATION
• Chalcack PRO: unlimited problems and questions, no ads.
• PRO Monthly: $9.99 per month. PRO Yearly: $79.99 per year (about $6.67 a month). Prices may vary by country.
• Payment is charged to your Apple ID account at confirmation of purchase.
• The subscription renews automatically unless canceled at least 24 hours before the end of the current period.
• Manage your subscription and auto-renewal in your App Store account settings.
Privacy Policy: https://www.chalcack.com/priva
Latest updates
1.2.83
Thanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements.
1.2.82
찰칵을 사용해주셔서 감사합니다!
더 나은 서비스를 위해 항상 노력하고 있습니다.
이번 업데이트에는 버그 수정과 성능 개선이 포함되어 있습니다.
앱이 마음에 드셨다면 리뷰도 부탁드려요!
1.2.80
Thanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements.
Store changes
What Chalcack: Your Study Crush changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
App got bigger
41 MB → 48 MB (+17%)
Added 1 language
+ ES
Chalcack: Your Study Crush Android
Chalcack: Your Study Crush gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Chalcack: Your Study Crush is #163 in Education Free on Google Play in South Korea and charting in 1 of 23 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperChalcack
CategoryEducation
PriceFree
Released
Installs50k+
Rating★ 4.5 (0)
Updated
Content ratingEveryone
Rating
4.5 ★
0 ratings
Measured
Best rank now
#163
Education FreeMeasured
Chalcack: Your Study Crush on Google Play
App details
App ID
com.andrewdhjang.chalcack
Publisher
장동해
Publisher country
South Korea
Content rating
Everyone
Chalcack: Your Study Crush downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where Chalcack: Your Study Crush's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Chalcack: Your Study Crush makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchasesAds · 2 ad networks
Subscriptions
/mo
of revenue
Ads
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | Premium subscription subscription | |
| 2 | Monthly Pro (Special Offer) subscription | |
| 3 | Yearly Pro (Special Offer) subscription | |
| 4 | Yearly Premium subscription subscription |
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | EducationFree | #163 |
Apps near Chalcack: Your Study Crush on the chart
Education Free, around #163.
Ratings
Google Play, worldwide.
Rating
4.5 ★
0 ratings
Measured
Ratings
0
Measured
About Chalcack: Your Study Crush
Don't Just Study. Master It.
Stop hitting a wall every time you encounter a tough problem. Whether it’s a complex equation, a confusing passage, or a deep scientific concept, Chalcack is your 24/7 AI study companion and academic utility designed to turn every "I'm stuck" into an "I get it!"
Simply snap a photo and watch as Chalcack breaks down the most difficult problems into clear, logical, step-by-step instructions. We don’t just give you the answer—we provide the roadmap to boost your GPA and master the material yourself.
■ WHY CHALCACK?
• Snap and Solve: From advanced Calculus to complex English grammar and Science, our AI recognizes the problem instantly and provides the most accurate solution in seconds.
• AI-Powered Logic: No more guessing games. We walk you through the logical flow and "Deep Thinking" behind every problem so you understand the "how" and the "why."
• All-in-One Subject Support: Math, English, Physics, Chemistry, Biology, History, and more. Whatever the grade level, Chalcack is the ultimate homework helper.
• Master Core Concepts: We identify the underlying principles behind each question and highlight why specific answers are wrong, maximizing your learning efficiency.
• Personal Study Vault & Review: Automatically save your scanned questions. Build a personalized Review Library and digital flashcards to bridge knowledge gaps before the big exam.
■ COMPREHENSIVE SUBJECT COVERAGE
• Mathematics: Algebra (Real Numbers, Logarithms, Complex Numbers), Function (Linear, Quadratic, Polynomial), Geometry, Trigonometry, Calculus (Derivatives, Integrals, Limits), Statistics, and Matrix Algebra.
• Science: Physics, Chemistry, Biology, and Earth Science.
• Language & Humanities: Grammar, Reading Comprehension, Vocabulary, Literature, and History.
• Test Prep: Expert-level support for SAT, ACT, AP Exams, IB, and English proficiency tests.
■ THE ULTIMATE STUDY TOOLBOX
• AI Study Converter: Turn your photos and notes into structured study guides.
• 24/7 Availability: Get expert-level AI help anytime, anywhere—no need to wait for a private tutor.
• Clear Visuals: Experience problems explained with the clarity of a live whiteboard.
■ WHO IS CHALCACK FOR?
• Solo Students: Get an immediate unblock to keep your study flow going.
• Visual Learners: Those who find vague textbook answer keys confusing and need animated logic.
• Self-Starters: Students looking to master concepts and improve grades without the high cost of tutoring.
• Test-Takers: Fast, efficient review for difficult problems before high-stakes exams.
Stop wasting time flipping through answer keys. Regain your confidence and make learning efficient again. With Chalcack, the solution is always just a snap away.
Download Chalcack today and start studying smarter!
■ SUBSCRIPTION INFORMATION
• Plan: Chalcack PRO
• Duration: 1 Month (Auto-renewal)
• Price: $9.99/month (or local equivalent)
• Payment will be charged to your Google Play account at confirmation of purchase.
Stop hitting a wall every time you encounter a tough problem. Whether it’s a complex equation, a confusing passage, or a deep scientific concept, Chalcack is your 24/7 AI study companion and academic utility designed to turn every "I'm stuck" into an "I get it!"
Simply snap a photo and watch as Chalcack breaks down the most difficult problems into clear, logical, step-by-step instructions. We don’t just give you the answer—we provide the roadmap to boost your GPA and master the material yourself.
■ WHY CHALCACK?
• Snap and Solve: From advanced Calculus to complex English grammar and Science, our AI recognizes the problem instantly and provides the most accurate solution in seconds.
• AI-Powered Logic: No more guessing games. We walk you through the logical flow and "Deep Thinking" behind every problem so you understand the "how" and the "why."
• All-in-One Subject Support: Math, English, Physics, Chemistry, Biology, History, and more. Whatever the grade level, Chalcack is the ultimate homework helper.
• Master Core Concepts: We identify the underlying principles behind each question and highlight why specific answers are wrong, maximizing your learning efficiency.
• Personal Study Vault & Review: Automatically save your scanned questions. Build a personalized Review Library and digital flashcards to bridge knowledge gaps before the big exam.
■ COMPREHENSIVE SUBJECT COVERAGE
• Mathematics: Algebra (Real Numbers, Logarithms, Complex Numbers), Function (Linear, Quadratic, Polynomial), Geometry, Trigonometry, Calculus (Derivatives, Integrals, Limits), Statistics, and Matrix Algebra.
• Science: Physics, Chemistry, Biology, and Earth Science.
• Language & Humanities: Grammar, Reading Comprehension, Vocabulary, Literature, and History.
• Test Prep: Expert-level support for SAT, ACT, AP Exams, IB, and English proficiency tests.
■ THE ULTIMATE STUDY TOOLBOX
• AI Study Converter: Turn your photos and notes into structured study guides.
• 24/7 Availability: Get expert-level AI help anytime, anywhere—no need to wait for a private tutor.
• Clear Visuals: Experience problems explained with the clarity of a live whiteboard.
■ WHO IS CHALCACK FOR?
• Solo Students: Get an immediate unblock to keep your study flow going.
• Visual Learners: Those who find vague textbook answer keys confusing and need animated logic.
• Self-Starters: Students looking to master concepts and improve grades without the high cost of tutoring.
• Test-Takers: Fast, efficient review for difficult problems before high-stakes exams.
Stop wasting time flipping through answer keys. Regain your confidence and make learning efficient again. With Chalcack, the solution is always just a snap away.
Download Chalcack today and start studying smarter!
■ SUBSCRIPTION INFORMATION
• Plan: Chalcack PRO
• Duration: 1 Month (Auto-renewal)
• Price: $9.99/month (or local equivalent)
• Payment will be charged to your Google Play account at confirmation of purchase.
What's new in 1.2.37
Thanks for using Chalcack!
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements.
We're always working hard to improve your experience.
This update includes bug fixes and performance improvements.
Store changes
What Chalcack: Your Study Crush changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Short description updated
New screenshots
12 screenshots (was 12)
Renamed
Chalcack: Homework, unstuck. → Chalcack: Your Study Crush
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