KOTOBA - KAIWA: iPhone vs Android
KOTOBA - KAIWA gets 500+ downloads a day worldwide (AppInsider estimate, October 2026, rounded down to a band).
KOTOBA - KAIWA by EUIHYUNG JUNG is on both the App Store and Google Play. Here are both versions together: downloads, users, revenue, ratings and chart positions, store by store with totals.
Rating
3.0 ★
2 ratings, both stores
Measured
Best rank now
#142
Android · 
Education Free
Education FreeMeasured
App Store
App details
App ID
6747955777
Publisher
EUIHYUNG JUNG
Publisher country
South Korea
On the store since
Jul 2025
1 year on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Content rating
4+
Languages
2
EN KO
Size
6 MB
Also listed in
Lifestyle
Google Play
App details
App ID
kr.supermassive.kotoba
Publisher
박현호
Publisher country
South Korea
Content rating
Everyone
KOTOBA - KAIWA downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| iPhone | – | – |
| Google Play | 500+ | 5k+ Measured |
| Total | 500+ Confidence | 5k+ Confidence |
How this is calculated
iPhone: 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 KOTOBA - KAIWA'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.
Business model: Ad-led
How KOTOBA - KAIWA makes money: subscriptions, one-off purchases and ads.
Ads · 3 ad networks
Ads
/mo
of revenue
Where it ranks now
Both stores, across every country we track.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 3.0 ★ | 2 |
| Google Play | 4.0 ★ | – |
| Both stores | 3.0 ★ weighted by ratings | 2 |
About KOTOBA - KAIWA
Learn Practical Japanese with 365 Essential Expressions
Speak Japanese in Your Daily Life—Starting Now!
Kotoba KAIWA is a practical Japanese learning app featuring 365 carefully selected everyday expressions, commonly used in real-life situations across Japan.
Key Features
• 365 Essential Daily Expressions
• Organized by frequency of use
• Covers all aspects of daily life: greetings, shopping, dining, transportation, and more
• Perfect Pronunciation Practice
• Native speaker audio (high-quality downloadable files)
• Real-time highlights as audio plays
• Accurate pronunciation with Hiragana and Romaji guides
• Real-Life Conversation Scenarios
• Situational context for each expression
• Flip cards to view conversations
• Learn when and how to use each phrase naturally
• Smart Learning Tools
• Quick search by 6 practical categories
• Manage favorite expressions for quick access
• Study modes: sequential or shuffle
• Auto-play for hands-free repetition
• Thoughtfully Designed Experience
• Full support for Dark Mode
• Intuitive card-based interface
• Automatically saves your progress
• Clear Korean translations and grammar notes
Recommended For:
• Travelers preparing for a trip to Japan
• Beginners starting Japanese conversation
• Anyone who wants to quickly master practical expressions
• Learners looking to study Japanese consistently every day
Tips for Effective Learning
1. Learn 5–10 expressions each day
2. Listen and repeat along with the native audio
3. Practice the conversations on the back of each card
4. Add frequently used expressions to your Favorites
Take your first step in Japanese learning with Kotoba KAIWA!
Speak Japanese in Your Daily Life—Starting Now!
Kotoba KAIWA is a practical Japanese learning app featuring 365 carefully selected everyday expressions, commonly used in real-life situations across Japan.
Key Features
• 365 Essential Daily Expressions
• Organized by frequency of use
• Covers all aspects of daily life: greetings, shopping, dining, transportation, and more
• Perfect Pronunciation Practice
• Native speaker audio (high-quality downloadable files)
• Real-time highlights as audio plays
• Accurate pronunciation with Hiragana and Romaji guides
• Real-Life Conversation Scenarios
• Situational context for each expression
• Flip cards to view conversations
• Learn when and how to use each phrase naturally
• Smart Learning Tools
• Quick search by 6 practical categories
• Manage favorite expressions for quick access
• Study modes: sequential or shuffle
• Auto-play for hands-free repetition
• Thoughtfully Designed Experience
• Full support for Dark Mode
• Intuitive card-based interface
• Automatically saves your progress
• Clear Korean translations and grammar notes
Recommended For:
• Travelers preparing for a trip to Japan
• Beginners starting Japanese conversation
• Anyone who wants to quickly master practical expressions
• Learners looking to study Japanese consistently every day
Tips for Effective Learning
1. Learn 5–10 expressions each day
2. Listen and repeat along with the native audio
3. Practice the conversations on the back of each card
4. Add frequently used expressions to your Favorites
Take your first step in Japanese learning with Kotoba KAIWA!
KOTOBA - KAIWA iPhone
KOTOBA - KAIWA gets 500+ downloads a day worldwide (AppInsider estimate, October 2026, rounded down to a band).
Not in any tracked top chart right now.
Updated 25 Oct 2026 · rankings refresh through the day
DeveloperEUIHYUNG JUNG
CategoryEducation
PriceFree
Released
Rating★ 3.0 (2)
Version1.1.8
Age rating4+
First seen by us
12 Oct 2026
12 Oct 2026Rating
3.0 ★
2 ratings
Measured
KOTOBA - KAIWA on the App Store
App details
App ID
6747955777
Publisher
EUIHYUNG JUNG
Publisher country
South Korea
On the store since
Jul 2025
1 year on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Content rating
4+
Languages
2
EN KO
Size
6 MB
Also listed in
Lifestyle
KOTOBA - KAIWA 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. iPhone 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 KOTOBA - KAIWA'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.
Business model: Ad-led
How KOTOBA - KAIWA makes money: subscriptions, one-off purchases and ads.
Ads · 3 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
3.0 ★
2 ratings
Measured
Ratings
2
Measured
About KOTOBA - KAIWA
Learn Practical Japanese with 365 Essential Expressions
Speak Japanese in Your Daily Life—Starting Now!
Kotoba KAIWA is a practical Japanese learning app featuring 365 carefully selected everyday expressions, commonly used in real-life situations across Japan.
Key Features
• 365 Essential Daily Expressions
• Organized by frequency of use
• Covers all aspects of daily life: greetings, shopping, dining, transportation, and more
• Perfect Pronunciation Practice
• Native speaker audio (high-quality downloadable files)
• Real-time highlights as audio plays
• Accurate pronunciation with Hiragana and Romaji guides
• Real-Life Conversation Scenarios
• Situational context for each expression
• Flip cards to view conversations
• Learn when and how to use each phrase naturally
• Smart Learning Tools
• Quick search by 6 practical categories
• Manage favorite expressions for quick access
• Study modes: sequential or shuffle
• Auto-play for hands-free repetition
• Thoughtfully Designed Experience
• Full support for Dark Mode
• Intuitive card-based interface
• Automatically saves your progress
• Clear Korean translations and grammar notes
Recommended For:
• Travelers preparing for a trip to Japan
• Beginners starting Japanese conversation
• Anyone who wants to quickly master practical expressions
• Learners looking to study Japanese consistently every day
Tips for Effective Learning
1. Learn 5–10 expressions each day
2. Listen and repeat along with the native audio
3. Practice the conversations on the back of each card
4. Add frequently used expressions to your Favorites
Take your first step in Japanese learning with Kotoba KAIWA!
Speak Japanese in Your Daily Life—Starting Now!
Kotoba KAIWA is a practical Japanese learning app featuring 365 carefully selected everyday expressions, commonly used in real-life situations across Japan.
Key Features
• 365 Essential Daily Expressions
• Organized by frequency of use
• Covers all aspects of daily life: greetings, shopping, dining, transportation, and more
• Perfect Pronunciation Practice
• Native speaker audio (high-quality downloadable files)
• Real-time highlights as audio plays
• Accurate pronunciation with Hiragana and Romaji guides
• Real-Life Conversation Scenarios
• Situational context for each expression
• Flip cards to view conversations
• Learn when and how to use each phrase naturally
• Smart Learning Tools
• Quick search by 6 practical categories
• Manage favorite expressions for quick access
• Study modes: sequential or shuffle
• Auto-play for hands-free repetition
• Thoughtfully Designed Experience
• Full support for Dark Mode
• Intuitive card-based interface
• Automatically saves your progress
• Clear Korean translations and grammar notes
Recommended For:
• Travelers preparing for a trip to Japan
• Beginners starting Japanese conversation
• Anyone who wants to quickly master practical expressions
• Learners looking to study Japanese consistently every day
Tips for Effective Learning
1. Learn 5–10 expressions each day
2. Listen and repeat along with the native audio
3. Practice the conversations on the back of each card
4. Add frequently used expressions to your Favorites
Take your first step in Japanese learning with Kotoba KAIWA!
Latest updates
1.1.8
Usability improvements and bug fixes
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Kotoba: JLPT Vocab Android
Kotoba: JLPT Vocab gets 500+ downloads a day worldwide (AppInsider estimate, October 2026, rounded down to a band).
Kotoba: JLPT Vocab is #142 in Education Free on Google Play in Indonesia and charting in 1 of 23 countries we track.
Updated 25 Oct 2026 · rankings refresh through the day
DeveloperSupermassive
CategoryEducation
PriceFree
Released
Installs5k+
Rating★ 4.0 (0)
Updated–
Content ratingEveryone
Rating
4.0 ★
0 ratings
Measured
Best rank now
#142
Education FreeMeasured
Kotoba: JLPT Vocab on Google Play
App details
App ID
kr.supermassive.kotoba
Publisher
박현호
Publisher country
South Korea
Content rating
Everyone
Kotoba: JLPT Vocab 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 Kotoba: JLPT Vocab'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 Kotoba: JLPT Vocab makes money: subscriptions, one-off purchases and ads.
Ads · 3 ad networks
Ads
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Indonesia | EducationFree | #142 |
Apps near Kotoba: JLPT Vocab on the chart
Education Free, around #142.
Ratings
Google Play, worldwide.
Rating
4.0 ★
0 ratings
Measured
Ratings
0
Measured
About Kotoba: JLPT Vocab
Kotoba (言葉) helps you grow your Japanese, one word at a time. Learn JLPT N5 to N1 vocabulary in short sessions you can finish today.
8,293 words are on your device, with meanings in English, Korean, or Bahasa Indonesia. No account. You can study and review without a network.
Today
Open the app and see today’s work: due reviews first, then new words toward your daily goal. Keep a streak, or continue a session you left unfinished.
Learn
Flip cards, recall the meaning or reading, and hear Japanese speech. Choose your level and how many words to study at once.
Quiz
Check yourself with multiple-choice meaning and reading questions. Quizzes do not change word status, so you can practice freely.
Words
Search N5-N1 by kanji, kana, romaji, or meaning. Filter Unstudied, Learning, Mastered, or Don't know. Open any entry for details and pronunciation.
My
See streaks, XP, accuracy, and achievements. Add a Home screen widget for today’s goal.
Kotoba is not affiliated with the Japanese Language Proficiency Test (JLPT), the Japan Foundation, or Japan Educational Exchanges and Services (JEES).
8,293 words are on your device, with meanings in English, Korean, or Bahasa Indonesia. No account. You can study and review without a network.
Today
Open the app and see today’s work: due reviews first, then new words toward your daily goal. Keep a streak, or continue a session you left unfinished.
Learn
Flip cards, recall the meaning or reading, and hear Japanese speech. Choose your level and how many words to study at once.
Quiz
Check yourself with multiple-choice meaning and reading questions. Quizzes do not change word status, so you can practice freely.
Words
Search N5-N1 by kanji, kana, romaji, or meaning. Filter Unstudied, Learning, Mastered, or Don't know. Open any entry for details and pronunciation.
My
See streaks, XP, accuracy, and achievements. Add a Home screen widget for today’s goal.
Kotoba is not affiliated with the Japanese Language Proficiency Test (JLPT), the Japan Foundation, or Japan Educational Exchanges and Services (JEES).