Onevoca Downloads & RevenueOnevoca: Flashcards/vocabulary · App Store & Google Play
Onevoca: Flashcards/vocabulary gets 100+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Onevoca: Flashcards/vocabulary by Minsu Kim is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
Onevoca: Flashcards/vocabulary update history & changes
Last change · 51 events since 2 Jun 2017Full timeline ↓📦AndroidUpdated to version 418📦iOSUpdated to version 411✏️AndroidDescription updated✏️AndroidShort description updated📦iOSUpdated to version 410📦AndroidUpdated to version 417💰AndroidIn-app price range changed💰AndroidIn-app price range changed⭐AndroidPassed 100 ratings⭐AndroidPassed 1K ratings📈AndroidEntered the top 100✏️iOSNew icon🆕iOSFirst spotted by AppInsider🆕AndroidFirst spotted by AppInsider🆕iOSReleased on the App Store
Full timeline · 51 events
- 📦Onevoca: Flashcards/vocabulary updated to version 418Android- Fixed an issue on Android 14 where playback stopped when the app moved to the background during auto-play study.
- Fixed an issue where saving important terms was not reflected in the UI in real time. - 📦Onevoca: Flashcards/vocabulary updated to version 411iOS특정 설정 상태에서 단어 검색 기능이 동작하지 않는 문제를 수정했어요.
- ✏️Onevoca: Flashcards/vocabulary: description updatedAndroid· US
- ✏️Onevoca: Flashcards/vocabulary: short description updatedAndroid· US
- 📦Onevoca: Flashcards/vocabulary updated to version 410iOS- Improved the random sorting algorithm for study sessions.
- Added the ability to post announcements in study groups.
- Fixed several minor bugs. - 📦Onevoca: Flashcards/vocabulary updated to version 417Android- Improved the random sorting algorithm for study sessions.
- Added the ability to post announcements in study groups.
- Fixed several minor bugs. - 📦Onevoca: Flashcards/vocabulary updated to version 409iOS- 단어 알림 화면에서 혼란스러운 사용 경험을 개선하고자 선택지를 '모르겠어요' / '외웠어요'에서 '어려워요' / '애매해요' / '외웠어요'로 변경했어요.
- 단어 추가 화면 진입시 선택 된 그룹의 검증 여부를 확인하여 없는 그룹에 단어를 추가하는 문제를 방지했어요.
- 라이브러리 랭킹 구간에 따라 닉네임 색상 변경을 적용했어요. - 📦Onevoca: Flashcards/vocabulary updated to version 416Android- To reduce confusion on the term notification screen, the options have been changed from “Don’t Know” / “Memorized” to “Difficult” / “Unsure” / “Memorized.”
- Added validation of the selected group when entering the term addition screen, preventing terms from being added to a group that no longer exists.… more - 📦Onevoca: Flashcards/vocabulary updated to version 408iOS소소한 버그를 수정했어요.
- 💰Onevoca: Flashcards/vocabulary: in-app price range changedAndroid$1.49 - $10.99 per item → $1.49 - $15.99 per item · US
- 📦Onevoca: Flashcards/vocabulary updated to version 415AndroidBug Fixes
- 📦Onevoca: Flashcards/vocabulary updated to version 407iOSFixed an issue where auto-filled meanings and pronunciations were not saved when saving a term using a keyboard shortcut on a Bluetooth keyboard.
- 📦Onevoca: Flashcards/vocabulary updated to version 414AndroidFixed an issue where auto-filled meanings and pronunciations were not saved when saving a term using a keyboard shortcut on a Bluetooth keyboard.
- 📦Onevoca: Flashcards/vocabulary updated to version 406iOS- 스터디그룹 가입신청 자동 승인 설정이 추가되었어요.
- 스터디그룹 설정이 화면에 즉시 반영되지 않는 문제를 수정했어요. - 💰Onevoca: Flashcards/vocabulary: in-app price range changedAndroid$1.49 - $9.99 per item → $1.49 - $10.99 per item · US
- 📦Onevoca: Flashcards/vocabulary updated to version 413AndroidBug fixes.
- 💰Onevoca: Flashcards/vocabulary: in-app price range changedAndroid$1.49 - $10.99 per item → $1.49 - $9.99 per item · US
- 📦Onevoca: Flashcards/vocabulary updated to version 405iOS구독 혜택에 단어 추가시 '실시간 발음 자동 생성' 기능이 추가 되었어요.
- 💰Onevoca: Flashcards/vocabulary: in-app price range changedAndroid$1.49 - $20.99 per item → $1.49 - $10.99 per item · US
- 📦Onevoca: Flashcards/vocabulary updated to version 412AndroidSubscription perk added: ‘Real-time pronunciation auto-generation’ when adding terms.
- 📦Onevoca: Flashcards/vocabulary updated to version 404iOS- 스터디그룹 소소한 편의성 개선 및 버그 수정 작업이 진행되었어요.
- 학습 설정에서 '메모 보기' 옵션과 '퀴즈 방식'옵션을 학습별로 분리할 수 있도록 개선했어요. - 📦Onevoca: Flashcards/vocabulary updated to version 411AndroidImproved the study settings so that the “Show Memo” option and the “Quiz Mode” option can be configured separately for each study type.
- 📦Onevoca: Flashcards/vocabulary updated to version 410AndroidFixed an issue where the “Time Limit” setting in the multiple-choice quiz was incorrectly marking answers as wrong on some devices.
- 📦Onevoca: Flashcards/vocabulary updated to version 403iOS- 학습 중에도 단어를 편집할 수 있도록 변경했어요.
- 예문 생성 기능의 품질을 개선했어요. - 📦Onevoca: Flashcards/vocabulary updated to version 409Android- Updated the app to allow editing terms even during a study session.
- Improved the quality of the example sentence generation feature. - 📦Onevoca: Flashcards/vocabulary updated to version 408Android- Improved the app to allow changing the “Time Limit” setting during an active study session.
- Added a setting to hide the “Generate Example Sentence” button on the term addition screen.
- Fixed bugs that were causing unexpected crashes.… more - 📦Onevoca: Flashcards/vocabulary updated to version 402iOS- Improved the multiple-choice quiz so that the timer can be set even during an active study session.
- Added a “Hide Example Sentence Generation Button” option to the term addition settings.
- Made minor UI refinements to some study-related screens.… more - 📦Onevoca: Flashcards/vocabulary updated to version 407AndroidMade minor UI refinements to some study-related screens.
- 📦Onevoca: Flashcards/vocabulary updated to version 401iOS- 학습 관련 소소한 UI를 일부 다듬었어요.
- 스터디 그룹 편의성을 개선했어요.
- 스터디그룹 노출 권한 설정이 추가되었어요. 노출 권한을 허용하면 스터디그룹을 검색하지 않아도 그룹이 노출돼요. - 📦Onevoca: Flashcards/vocabulary updated to version 400iOS- 스터디그룹에서 멤버들의 단어를 공유할 수 있는 권한을 설정할 수 있는 기능이 추가되었어요.
- 스터디그룹의 새롭게 추가 된 주제 기능을 그룹 내 유저 프로필에서 작성자가 작성한 주제를 확인할 수 있도록 기능을 추가했어요.
- 그 외 소소한 버그 몇 개를 수정했어요. - 📦Onevoca: Flashcards/vocabulary updated to version 406AndroidFixed an issue where the last term card was being obscured by a button on the study results screen.
- ✏️Onevoca: Flashcards/vocabulary: needs a newer iOSiOSiOS 15.0 → iOS 16.0
- 📦Onevoca: Flashcards/vocabulary: now updating weeklyAndroid4 updates in 30 days, after a quiet two months
- 📦Onevoca: Flashcards/vocabulary updated to version 405Android- Added a chat room to study groups where members can communicate freely without sharing terms.
- 📦Onevoca: Flashcards/vocabulary updated to version 399iOS- 학습 랜덤 순서 분포를 너무 학습 횟수가 적은 단어에만 치중되지 않도록 알고리즘을 개선했어요.
- 스터디그룹에 단어를 공유하지 않고도 자유롭게 대화할 수 있는 소통방이 추가되었어요. - 📦Onevoca: Flashcards/vocabulary: now updating weeklyiOS4 updates in 30 days, after a quiet two months
- 📦Onevoca: Flashcards/vocabulary updated to version 404Android- Added the ability to instantly save terms generated from example sentences directly to the memo.
- Improved the algorithm for random study order to prevent it from being too heavily weighted toward terms with fewer study sessions.… more - 📦Onevoca: Flashcards/vocabulary updated to version 398iOS- 맥 앱에서 검색 기능이 있는 화면을 열면 비정상 종료되는 문제를 수정했어요.
- 학습 기록에서 어제 학습한 단어, 3일 동안 학습한 단어가 표기되지 않는 문제를 수정했어요.
- 예문으로 생성한 단어를 즉시 단어 메모에 저장할 수 있는 기능을 추가했어요. - 📈Onevoca: Flashcards/vocabulary entered the top 100AndroidTop Free · Education · KR
- ✏️Onevoca: Flashcards/vocabulary: new iconAndroid
→
· US
- ✏️Onevoca: Flashcards/vocabulary: new iconiOS
→ 
· KR - 📦Onevoca: Flashcards/vocabulary updated to version 397iOS- 새로 바뀐 아이콘이 밤티라는 놀림을 받고 있어요. 아이콘을 더 귀엽게 바꿨어요!
- 자동재생 학습에서 일시정지 상태에서 음성 재생이 가능하도록 개선되었어요.
- 학습 설정에서 '메모 숨김' 옵션이 추가 되었어요. - 🆕Onevoca: Flashcards/vocabulary first spotted by AppInsideriOS#55 in Top Grossing · Education · South Korea
- 📦Onevoca: Flashcards/vocabulary updated to version 403Android- The newly updated icon was being teased for looking like a chestnut, so we redesigned it to be even cuter!
- Improved the auto-play study mode to allow audio playback even while paused.
- Added a "Hide Memo" option to the study settings.… more - 🆕Onevoca: Flashcards/vocabulary first spotted by AppInsiderAndroidSouth Korea
- 📦Onevoca: Flashcards/vocabulary version 396iOSFixed several minor bugs.
- 📦Onevoca: Flashcards/vocabulary version 401AndroidNo release notes
- 🆕Onevoca: Flashcards/vocabulary released on Google PlayAndroid
- 🆕Onevoca: Flashcards/vocabulary 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
4.6 ★
15k ratings, both stores
Measured
Best rank now
#46
App Store · 
Education Free
Education FreeMeasured
New ratings a week
39
▲ +21% vs the 2 weeks before (App Store)
Measured
App Store
App details
App ID
1242173441
Publisher
Minsu Kim
Publisher country
South Korea
On the store since
Jun 2017
9 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN JA KO
Size
47 MB
Also listed in
Productivity
Google Play
App details
App ID
com.zak1ller.Onevoca
Publisher
김민수
Publisher country
South Korea
Content rating
Everyone
Onevoca: Flashcards/vocabulary downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | 100+ | 1M+ |
| Google Play | 50+ | 100k+ Measured |
| Total | 100+ Confidence | 1M+ 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 Onevoca: Flashcards/vocabulary'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.
In-app revenue
Worldwide, what users spend before Apple and Google take their fee.
| Store | Per day | Per month | Share |
|---|---|---|---|
| App Store | |||
| Google Play | |||
| Total | Confidence | 100% |
Business model: In-app purchase-led
How Onevoca: Flashcards/vocabulary makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | 5000 SLOTS | |
| 2 | 20,000 SLOTS | |
| 3 | 10,000 Slots | |
| 4 | Pack Boost |
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #46 Education Free | 1 of 30 countries | – | – |
| Google Play | #61 Education Grossing | 1 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisApp Store
New ratings a week
31
▲ +21% vs the 2 weeks before
Lifetime rating
4.6★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
78/100
faster than 91% of Education apps
Google Play
New ratings a week
8
▲ +27% vs the 2 weeks before
Written reviews a week
under 1
Google Play
Lifetime rating
4.8★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
39/100
faster than 25% 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 | 4.6 ★ | 13k |
| Google Play | 4.8 ★ | 1.8k 4 written reviews |
| Both stores | 4.6 ★ weighted by ratings | 15k |
About Onevoca: Flashcards/vocabulary
Unsure how to study vocabulary? So we prepared it. Foreign language words, technical terms, test-taking vocabularly words, liberal arts vocabulary, etc.
Study the words you want to learn comfortably through the fun and efficient learning functions selected by Onevoca..We have prepared various learning functions for you who are studying multiple words. In particular, you can study those words while listening to the correct pronunciation through TTS, artificial intelligence that reads with the natural and attractive voices of locals.
Onevoca can play the voices of artificial intelligence in 40 countries around the world:
Arabic, Bengali, Chinese, Czech, Danish, Dutch, English (US, UK), Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese
Those who use Onevoca study these words:
English, Japanese, Chinese, medical terms, chemical terms, Bible verses, language arts, history, Chinese characters..
“In fact, there are so many words so I don't know how many different kinds of words you are studying. Onevoca is designed to memorize any word or phrase.
Especially as a developer, I am studying English vocabulary and liberal arts vocabulary with Onevoca."
If you download Onevoca, you can:
Create your own safe and permanent vocabulary list by registering words to study:
You can register the words you want to study by grouping them. For example, you can register English words in the English group and Chinese words in the Chinese group.Notebooks are also great, but the best advantage of smart devices is that you can easily find, change, and delete words once registered at any time, and also neatly sort them, right?
Choose a learning game that fits the words you're studying and learn:
Onevoca includes a variety of learning functions for you to study various words. You can study by choosing the learning function that best suits you. When I study English vocabulary, I use a mix of flashcards and guessing spelling. When I study liberal arts vocabulary, I use a mix of flashcards and four-choice learning.
Word Sharing:
Onevoca includes a word sharing feature that allows you to reveal your elaborately written vocabulary list so that everyone can download, or privately reveal words only for people you study with, such as friends, team members, and teachers. Share your word list with people you don't know, or learn words with friends.
Learn without mental energy consumption by using notifications:
You can set notifications at any time interval to receive notifications of words you need to learn. If you hear a notification sound even while reading a book, take only 3 seconds to see the notification pop-up on your cell phone facing down. If you hear a notification sound even while walking, take only 3 seconds to see the notif
Study the words you want to learn comfortably through the fun and efficient learning functions selected by Onevoca..We have prepared various learning functions for you who are studying multiple words. In particular, you can study those words while listening to the correct pronunciation through TTS, artificial intelligence that reads with the natural and attractive voices of locals.
Onevoca can play the voices of artificial intelligence in 40 countries around the world:
Arabic, Bengali, Chinese, Czech, Danish, Dutch, English (US, UK), Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese
Those who use Onevoca study these words:
English, Japanese, Chinese, medical terms, chemical terms, Bible verses, language arts, history, Chinese characters..
“In fact, there are so many words so I don't know how many different kinds of words you are studying. Onevoca is designed to memorize any word or phrase.
Especially as a developer, I am studying English vocabulary and liberal arts vocabulary with Onevoca."
If you download Onevoca, you can:
Create your own safe and permanent vocabulary list by registering words to study:
You can register the words you want to study by grouping them. For example, you can register English words in the English group and Chinese words in the Chinese group.Notebooks are also great, but the best advantage of smart devices is that you can easily find, change, and delete words once registered at any time, and also neatly sort them, right?
Choose a learning game that fits the words you're studying and learn:
Onevoca includes a variety of learning functions for you to study various words. You can study by choosing the learning function that best suits you. When I study English vocabulary, I use a mix of flashcards and guessing spelling. When I study liberal arts vocabulary, I use a mix of flashcards and four-choice learning.
Word Sharing:
Onevoca includes a word sharing feature that allows you to reveal your elaborately written vocabulary list so that everyone can download, or privately reveal words only for people you study with, such as friends, team members, and teachers. Share your word list with people you don't know, or learn words with friends.
Learn without mental energy consumption by using notifications:
You can set notifications at any time interval to receive notifications of words you need to learn. If you hear a notification sound even while reading a book, take only 3 seconds to see the notification pop-up on your cell phone facing down. If you hear a notification sound even while walking, take only 3 seconds to see the notif
Onevoca: Flashcards/vocabulary App Store
원보카: 나만의 단어장, 단어, 영단어, 일본어, 암기
Onevoca: Flashcards/vocabulary gets 100+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Onevoca: Flashcards/vocabulary is #46 in Education Free in South Korea and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperMinsu Kim
CategoryEducation
PriceFree
Released
Rating★ 4.6 (13k)
Version411
Age rating4+
First seen by us 25 Sep 2026
25 Sep 2026Installs (est.)1M+ worldwide
Rating
4.6 ★
13k ratings
Measured
Best rank now
#46
Education FreeMeasured
New ratings a week
31
▲ +21% vs the 2 weeks before
Measured
Onevoca: Flashcards/vocabulary on the App Store
App details
App ID
1242173441
Publisher
Minsu Kim
Publisher country
South Korea
On the store since
Jun 2017
9 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN JA KO
Size
47 MB
Also listed in
Productivity
Onevoca: Flashcards/vocabulary 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 Onevoca: Flashcards/vocabulary'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.
In-app revenue
Worldwide, what users spend in Onevoca: Flashcards/vocabulary before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: In-app purchase-led
How Onevoca: Flashcards/vocabulary makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | 5000 SLOTS | |
| 2 | 20,000 SLOTS | |
| 3 | 10,000 Slots | |
| 4 | Pack Boost |
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | EducationFree | #46 |
| South Korea | EducationGrossing | #54 |
Apps near Onevoca: Flashcards/vocabulary on the chart
Education Free, around #46.
Ratings
App Store, worldwide.
Rating
4.6 ★
13k ratings
Measured
Ratings
13k
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
31
▲ +21% vs the 2 weeks before
Lifetime rating
4.6★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
78/100
faster than 91% 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.
About Onevoca: Flashcards/vocabulary
Unsure how to study vocabulary? So we prepared it. Foreign language words, technical terms, test-taking vocabularly words, liberal arts vocabulary, etc.
Study the words you want to learn comfortably through the fun and efficient learning functions selected by Onevoca..We have prepared various learning functions for you who are studying multiple words. In particular, you can study those words while listening to the correct pronunciation through TTS, artificial intelligence that reads with the natural and attractive voices of locals.
Onevoca can play the voices of artificial intelligence in 40 countries around the world:
Arabic, Bengali, Chinese, Czech, Danish, Dutch, English (US, UK), Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese
Those who use Onevoca study these words:
English, Japanese, Chinese, medical terms, chemical terms, Bible verses, language arts, history, Chinese characters..
“In fact, there are so many words so I don't know how many different kinds of words you are studying. Onevoca is designed to memorize any word or phrase.
Especially as a developer, I am studying English vocabulary and liberal arts vocabulary with Onevoca."
If you download Onevoca, you can:
Create your own safe and permanent vocabulary list by registering words to study:
You can register the words you want to study by grouping them. For example, you can register English words in the English group and Chinese words in the Chinese group.Notebooks are also great, but the best advantage of smart devices is that you can easily find, change, and delete words once registered at any time, and also neatly sort them, right?
Choose a learning game that fits the words you're studying and learn:
Onevoca includes a variety of learning functions for you to study various words. You can study by choosing the learning function that best suits you. When I study English vocabulary, I use a mix of flashcards and guessing spelling. When I study liberal arts vocabulary, I use a mix of flashcards and four-choice learning.
Word Sharing:
Onevoca includes a word sharing feature that allows you to reveal your elaborately written vocabulary list so that everyone can download, or privately reveal words only for people you study with, such as friends, team members, and teachers. Share your word list with people you don't know, or learn words with friends.
Learn without mental energy consumption by using notifications:
You can set notifications at any time interval to receive notifications of words you need to learn. If you hear a notification sound even while reading a book, take only 3 seconds to see the notification pop-up on your cell phone facing down. If you hear a notification sound even while walking, take only 3 seconds to see the notif
Study the words you want to learn comfortably through the fun and efficient learning functions selected by Onevoca..We have prepared various learning functions for you who are studying multiple words. In particular, you can study those words while listening to the correct pronunciation through TTS, artificial intelligence that reads with the natural and attractive voices of locals.
Onevoca can play the voices of artificial intelligence in 40 countries around the world:
Arabic, Bengali, Chinese, Czech, Danish, Dutch, English (US, UK), Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese
Those who use Onevoca study these words:
English, Japanese, Chinese, medical terms, chemical terms, Bible verses, language arts, history, Chinese characters..
“In fact, there are so many words so I don't know how many different kinds of words you are studying. Onevoca is designed to memorize any word or phrase.
Especially as a developer, I am studying English vocabulary and liberal arts vocabulary with Onevoca."
If you download Onevoca, you can:
Create your own safe and permanent vocabulary list by registering words to study:
You can register the words you want to study by grouping them. For example, you can register English words in the English group and Chinese words in the Chinese group.Notebooks are also great, but the best advantage of smart devices is that you can easily find, change, and delete words once registered at any time, and also neatly sort them, right?
Choose a learning game that fits the words you're studying and learn:
Onevoca includes a variety of learning functions for you to study various words. You can study by choosing the learning function that best suits you. When I study English vocabulary, I use a mix of flashcards and guessing spelling. When I study liberal arts vocabulary, I use a mix of flashcards and four-choice learning.
Word Sharing:
Onevoca includes a word sharing feature that allows you to reveal your elaborately written vocabulary list so that everyone can download, or privately reveal words only for people you study with, such as friends, team members, and teachers. Share your word list with people you don't know, or learn words with friends.
Learn without mental energy consumption by using notifications:
You can set notifications at any time interval to receive notifications of words you need to learn. If you hear a notification sound even while reading a book, take only 3 seconds to see the notification pop-up on your cell phone facing down. If you hear a notification sound even while walking, take only 3 seconds to see the notif
Latest updates
411
특정 설정 상태에서 단어 검색 기능이 동작하지 않는 문제를 수정했어요.
410
- Improved the random sorting algorithm for study sessions.
- Added the ability to post announcements in study groups.
- Fixed several minor bugs.
409
- 단어 알림 화면에서 혼란스러운 사용 경험을 개선하고자 선택지를 '모르겠어요' / '외웠어요'에서 '어려워요' / '애매해요' / '외웠어요'로 변경했어요.
- 단어 추가 화면 진입시 선택 된 그룹의 검증 여부를 확인하여 없는 그룹에 단어를 추가하는 문제를 방지했어요.
- 라이브러리 랭킹 구간에 따라 닉네임 색상 변경을 적용했어요.
Store changes
What Onevoca: Flashcards/vocabulary changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Needs a newer iOS
iOS 15.0 → iOS 16.0
More from Minsu Kim
Onevoca - Flashcards Android
Onevoca - Flashcards gets 100+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Onevoca - Flashcards is #61 in Education Grossing on Google Play in South Korea and charting in 1 of 23 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperSumin Inc
CategoryEducation
PriceFree
Released
Installs100k+
Rating★ 4.8 (1.8k)
Updated
Content ratingEveryone
Rating
4.8 ★
1.8k ratings
Measured
Best rank now
#61
Education GrossingMeasured
New ratings a week
8
▲ +27% vs the 2 weeks before
Measured
Onevoca - Flashcards on Google Play
App details
App ID
com.zak1ller.Onevoca
Publisher
김민수
Publisher country
South Korea
Content rating
Everyone
Onevoca - Flashcards 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 Onevoca - Flashcards'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
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.
In-app revenue
Worldwide, what users spend in Onevoca - Flashcards before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: In-app purchase-led
How Onevoca - Flashcards makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | 5000 SLOTS | |
| 2 | 20,000 SLOTS | |
| 3 | 10,000 Slots | |
| 4 | Pack Boost |
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | EducationGrossing | #61 |
Apps near Onevoca - Flashcards on the chart
Education Grossing, around #61.
Ratings
Google Play, worldwide.
Rating
4.8 ★
1.8k ratings
Measured
Ratings
1.8k
Measured
Written reviews
4
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
8
▲ +27% vs the 2 weeks before
Written reviews a week
under 1
Google Play
Lifetime rating
4.8★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
39/100
faster than 25% 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.
About Onevoca - Flashcards
Build vocabulary flashcards with only the words you need.
Study English, Japanese, and other languages, or memorize terms for exams and any other subject.
■ Add words quickly
• Type a word and its meaning appears automatically.
• Import your words from a CSV file.
• AI-generated example sentences help you understand each word in context.
■ Organize by topic or chapter
• Sort your words with groups and collections.
■ Shared vocabulary library
• Download ready-made word lists from the library.
• Share your own lists with other learners.
■ Natural, high-quality AI voices
• Listen to pronunciation in natural AI voices.
• Supported languages: Arabic, Bengali, Chinese (Mandarin), Czech, Danish, Dutch, English (US, UK, Australia), Filipino (Tagalog), Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese
■ Multiple study modes
• Keep practicing new and familiar words until you know them.
• Customize your sessions and use section study and review.
■ Word notifications
• Review words you have learned just by receiving notifications.
• Set notifications to suit your routine.
■ Study groups
• Anyone can create a study group, and only invited people can join.
• Study together with friends and teachers.
Support: [email protected]
Website: https://www.onevoca.com
Study English, Japanese, and other languages, or memorize terms for exams and any other subject.
■ Add words quickly
• Type a word and its meaning appears automatically.
• Import your words from a CSV file.
• AI-generated example sentences help you understand each word in context.
■ Organize by topic or chapter
• Sort your words with groups and collections.
■ Shared vocabulary library
• Download ready-made word lists from the library.
• Share your own lists with other learners.
■ Natural, high-quality AI voices
• Listen to pronunciation in natural AI voices.
• Supported languages: Arabic, Bengali, Chinese (Mandarin), Czech, Danish, Dutch, English (US, UK, Australia), Filipino (Tagalog), Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese
■ Multiple study modes
• Keep practicing new and familiar words until you know them.
• Customize your sessions and use section study and review.
■ Word notifications
• Review words you have learned just by receiving notifications.
• Set notifications to suit your routine.
■ Study groups
• Anyone can create a study group, and only invited people can join.
• Study together with friends and teachers.
Support: [email protected]
Website: https://www.onevoca.com
What's new in 418
- Fixed an issue on Android 14 where playback stopped when the app moved to the background during auto-play study.
- Fixed an issue where saving important terms was not reflected in the UI in real time.
- Fixed an issue where saving important terms was not reflected in the UI in real time.
Store changes
What Onevoca - Flashcards changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
Short description updated
In-app price range changed
$1.49 - $10.99 per item → $1.49 - $15.99 per item