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Coban: Learn Japanese icon
APP STORE

Coban: Learn Japanese

Akira NOGUCHI · Education · India store
NOT IN TOP 100 HERE
View on App Store ↗ Instagram card Google Play version →
Revenue a month, worldwide EST
$1.2K
Likely $402 to $3.6K
▼ 73.8% in 13 days
New ratings
+0
in 1 days, 1.9K in total
Rating
4.8 of 5
48 ratings in this store
Countries it ranks in
0
was 0 on Oct 19, 2026

Revenue

Estimated from the grossing charts of Oct 26, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / YEAR · WORLDWIDE
$14.5K
24 new ratings a month on average since launch
EST. LIFETIME DOWNLOADS
1.7K to 4.8K
Estimated from ratings count
WHERE ITS USERS ARE · SHARE OF RATINGS
  • United States 621 ratings48%
  • Japan 213 ratings16%
  • Spain 145 ratings11%
  • Philippines 114 ratings9%
  • United Kingdom 73 ratings6%
  • India 48 ratings4%
  • Canada 40 ratings3%
  • Saudi Arabia 15 ratings1%
HOW SURE ARE WE
Not in any grossing chart, so this comes from ratings growth (24 new ratings a month on average since launch): revenue grows with new ratings, more slowly for apps that collect ratings fast. Tested on 418 apps with verified revenue: typically off by about 2 times, and big earners tend to come out low. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
48
AVG RATING
4.75
PRICE
Free
AGE
6.6y
LAST UPDATE
10d ago
VERSION
4.5.1
SIZE
661 MB
AGE RATING
4+

Last 30 days

From our daily snapshots of every grossing chart and daily ratings counts.

DAYS IN A GROSSING CHART
2 / 30
COUNTRIES NOW
0 (was 0)
NEW RATINGS, LAST 1 DAYS
+0
EST. REVENUE A MONTH, DAILY · BOTH STORES EST
Show daily values
Sep 27, 2026not in a grossing chart
Sep 28, 2026not in a grossing chart
Sep 29, 2026not in a grossing chart
Sep 30, 2026not in a grossing chart
Oct 1, 2026not in a grossing chart
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026not in a grossing chart
Oct 5, 2026not in a grossing chart
Oct 6, 2026not in a grossing chart
Oct 7, 2026not in a grossing chart
Oct 8, 2026not in a grossing chart
Oct 9, 2026not in a grossing chart
Oct 10, 2026$35.3K a month
Oct 11, 2026not in a grossing chart
Oct 12, 2026not in a grossing chart
Oct 13, 2026not in a grossing chart
Oct 14, 2026not in a grossing chart
Oct 15, 2026not in a grossing chart
Oct 16, 2026not in a grossing chart
Oct 17, 2026not in a grossing chart
Oct 18, 2026not in a grossing chart
Oct 19, 2026not in a grossing chart
Oct 20, 2026not in a grossing chart
Oct 21, 2026not in a grossing chart
Oct 22, 2026not in a grossing chart
Oct 23, 2026$9.2K a month
Oct 24, 2026not in a grossing chart
Oct 25, 2026not in a grossing chart
Oct 26, 2026not in a grossing chart
The same estimate as the headline, saved every day. Best rank Sep 27, 2026: not ranked. Now: not ranked.
RATINGS IN THE CORE COUNTRIES, DAILY
Show daily values
Oct 23, 20261.9K ratings
Oct 24, 20261.9K ratings
1.9K on Oct 23, 2026, 1.9K on Oct 24, 2026. New ratings track new downloads, even outside the charts.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
5 purchases listed
  • Premium User₹ 699
  • Premium User₹ 5,900
  • Lifetime Upgrade₹ 5,900
  • Lifetime Access₹ 9,900
  • Premium User₹ 3,999
Top in-app purchases as listed on the App Store, in local prices.
REVIEW MOMENTUM
0.2 reviews / week
  • Trendfalling
  • Recent reviews average4.4 stars
  • Recent 1 and 2 star share8%
From the latest 71 written reviews, covering 2389 days.
RELEASE CADENCE
10 updates in 90 days
  • Typical gap between releases11 days
From the last 25 versions listed on the App Store.
RATING BREAKDOWN
48 ratings
5★83%
4★10%
3★4%
2★2%
1★0%

What users want

From the latest 71 reviews on the India App Store, Apr 12, 2020 to Sep 29, 2026: 8% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS

No common theme in the bad reviews, or they aren't in English.

WHAT THEY ASK FOR
  • I submitted a feature request and they got back to me in less than 24 hours. 5★, Sep 16, 2025
  • I want to be able to pick up where I left off. 4★, Feb 26, 2025
  • I wish I found this app earlier, so now I'm just waiting for it to update with N4 grammar breakdowns, and N3 hopefully. 5★, Jul 15, 2021
  • I wish I had discovered this app earlier when I started Japanese. 5★, Jun 6, 2021
  • The quizzes are perfect but I wish there were more for each lesson. 5★, May 6, 2021
  • I only have one request: Could you please add the N3 kanji as well? 5★, Apr 9, 2021
  • It would be great if there was an N3 kanji section, one that's just like the N4 kanji section, with the same format, same reading/meaning sections and everything but for N3 instead. 5★, Apr 9, 2021
  • I know this is material for N5 learners but I would LOVE to see more for levels N4-N1. 5★, Sep 20, 2020
WORDS THAT KEEP COMING UP IN BAD REVIEWS

Nothing stands out.

WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Useful, it helps28%

16 of the 4 and 5 star reviews.

★★★★★ The VS functionality to help identify differences in similar grammar points is especially useful.
★★★★★ The practice/test helps me master the kanji easily.
★★★★★ I'm going to be taking the N3 this December and I was struggling with finding an app that had good grammar practice. The textbooks are a lot and can get boring easily, but so far i've learned a lot from this app in my…
Easy to use16%

9 of the 4 and 5 star reviews.

★★★★★ It has a nice, intuitive flow with daily reviews, podcasts, books, and language tests.
★★★★★ Easy to master and how to write kanji, detailed list of vocabulary, grammar and listening too.
★★★★★ In addition, to the resource, the interface is nice and easy to navigate.
Worth the money12%

7 of the 4 and 5 star reviews.

★★★★★ I knew them from a series of N5 and N4 materials available online entirely for free.
★★★★★ You can learn N5-N3 for FREE.
★★★★★ Overall though, I love the content in the new update, the only thing stopping me from getting the premium upgrade is the lagging (You can still learn up to JLPT 3 for free.) it's still a very good source to use, it has…
Fun, addictive7%

4 of the 4 and 5 star reviews.

★★★★★ The textbooks are a lot and can get boring easily, but so far i've learned a lot from this app in my 2 days using it, and it's rlly fun, and the developer is super nice.
★★★★★ I just want to start with I LOVE this app, it's well organized, easy to navigate, and fun!
★★★★★ I am really having fun learning Japanese with this APP.
Looks great5%

3 of the 4 and 5 star reviews.

★★★★★ The app has a friendly interface and plenty of examples.
★★★★★ In addition, to the resource, the interface is nice and easy to navigate.
★★★★★ For grammar stuff it's hands down the best resource I've found, but again, the UI doesn't work well.

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, India App Store.

★★★★★Sep 29, 2026
Amazing!

I’ve been a fan of the creator of this app for the longest time, before the app evolved so much. I knew them from a series of N5 and N4 materials available online entirely for free. I studied alone for some years, and it’s in great part thanks to this material that I passed on both N5 and N4 (back in 2021 and 2022). Now, I am very happy to see how the app is much more polished, with lots more resources, as I’m sure it will help me a lot with N3 and beyond. This is a creator I am very happy to support, and I have been very satisfied with everything I have seen so far. I highly recommend it for anyone who’s serious about studying Japanese! The app has a friendly interface and plenty of examples. The VS functionality to help identify differences in similar grammar points is especially useful. Keep up the excellent work! ⭐️

★★★★★Sep 19, 2026
This app has everything

I recently abandoned a well-known language app for this one, and my wife and I have been really pleased with what this one has to offer. It has a nice, intuitive flow with daily reviews, podcasts, books, and language tests. It has everything that I wanted in a Japanese language app.

★★★★★Sep 11, 2026
Es una aplicación muy completa

La recomiendo para estudiar, porque tiene diferentes actividades como lectura de libros, kanji, escucha, exámenes de simulacro, y hay retroalimentación.

★★★★★Sep 1, 2026
Excelente aplicativo complementar

Na minha humilde opinião é um aplicativo eficiente, achei muito completo para praticar, memorizar, descobrir, conhecer, pra quem vai fazer o JLPT, muito eficiente e prático, とてもべんりですね

★★★★★Aug 17, 2026
Best

Best best and best

★★★★★Jul 23, 2026
Structured really well!!

I have tried many apps to help study 日本語 this app hits all the spot.. it’s organized and structured so good made my my studying much effective. Money well spent. ありがとうございます

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Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

Apple's ad repository couldn't be reached right now. Try again later.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

Meta Ad Library ↗Active Facebook and Instagram adsTikTok Creative Center ↗Top performing TikTok adsTikTok creators ↗Organic videos mentioning the appInstagram ↗Reels and posts under its hashtagYouTube ↗Reviews, tutorials and ShortsDeveloper site ↗Landing page and pricing

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

japanese10learn5jlpt5vocabulary5study5kanji grammar5grammar4coban4vocabulary kanji3understand japanese3jlpt content3example sentences3kanji3listening3review3content3structured2lessons2reading2designed2understand2context2skills2need2

What's new in 4.5.1

- Fixed a drag-and-drop UI issue in SRS. - Added support for iOS 15. - Improved the UI and fixed minor bugs.

Released Apr 8, 2020. Current version shipped Oct 17, 2026.

Store description

Learn Japanese from hiragana to JLPT N1 with structured lessons for vocabulary, kanji, grammar, listening, reading, and review — all in one app. Coban is designed for learners who want to understand Japanese, not simply memorize it. Learn grammar and vocabulary in context, recognize patterns, and build the skills you need to understand and use Japanese naturally. — STUDY FROM N5 TO N1 Follow a structured learning path from beginner Japanese to advanced JLPT content. • 7,500+ vocabulary words • 2,100+ kanji • 490+ grammar points • 2,500+ example sentences • JLPT N5, N4, N3, N2, and N1 content — LEARN WITH AUDIO More than 12,000 audio recordings help you connect written Japanese with natural pronunciation. Listen to vocabulary and example sentences, practice shadowing, and strengthen your listening comprehension as you study. — REVIEW WHAT YOU LEARN Use quizzes and SRS review to reinforce vocabulary, kanji, and grammar and focus your study on what you need to remember. — STUDY JAPANESE OFFLINE Coban’s learning content is stored on your device, so you can continue studying even without an internet connection. — BUILT FOR REAL JAPANESE Coban goes beyond JLPT test preparation. Lessons are designed to help you see how Japanese works in context so you can apply what you learn to reading, listening, conversation, and everyday communication. Whether you are just starting Japanese or working toward JLPT N1, Coban gives you a complete Japanese study library you can keep using as your skills grow.

See this store page in another country

Prices, ranks and reviews are per country. Revenue above is already worldwide.

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