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APP STORE

Coban: Learn Japanese

Akira NOGUCHI · Education · United States 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
620 ratings in this store
Countries it ranks in
0
was 0 on Oct 17, 2026

Revenue

Estimated from the grossing charts of Oct 24, 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
21.7K to 62K
Estimated from ratings count
WHERE ITS USERS ARE · SHARE OF RATINGS
  • United States 620 ratings33%
  • France 253 ratings13%
  • Japan 213 ratings11%
  • Mexico 182 ratings10%
  • Spain 145 ratings8%
  • Philippines 114 ratings6%
  • United Kingdom 73 ratings4%
  • India 48 ratings3%
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
620
AVG RATING
4.78
PRICE
Free
AGE
6.6y
LAST UPDATE
8d 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 25, 2026not in a grossing chart
Sep 26, 2026not in a grossing chart
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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
The same estimate as the headline, saved every day. Best rank Sep 25, 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$6.99
  • Premium User$59.99
  • Lifetime Access$99.99
  • Premium User$39.90
  • Lifetime Upgrade$59.99
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 share6%
From the latest 52 written reviews, covering 2328 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
621 ratings
5★86%
4★10%
3★3%
2★0%
1★1%

What users want

From the latest 52 reviews on the United States App Store, Jun 10, 2020 to Sep 29, 2026: 6% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS

Only 3 of the latest 52 reviews are 1 or 2 stars, too few to find patterns. Users are mostly happy.

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 helps27%

12 of the 4 and 5 star reviews.

★★★★★ The VS functionality to help identify differences in similar grammar points is especially useful.
★★★★★ 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…
★★★★★ I especially find the explanations of grammar with examples and exercises to go with it useful and engaging.
Easy to use14%

6 of the 4 and 5 star reviews.

★★★★★ It has a nice, intuitive flow with daily reviews, podcasts, books, and language tests.
★★★★★ In addition, to the resource, the interface is nice and easy to navigate.
★★★★★ I just want to start with I LOVE this app, it's well organized, easy to navigate, and fun!
Worth the money14%

6 of the 4 and 5 star reviews.

★★★★★ I knew them from a series of N5 and N4 materials available online entirely 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…
★★★★★ This app offers both free and subscription options for the user.
Fun, addictive9%

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 great7%

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, United States 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 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

★★★★★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

★★★★★Jul 10, 2026
Essential!

Vocabulary and JLPT enough to pass basic. Updates review later.

★★★★★Jun 9, 2026
I love this app… but

The new update makes it very laggy when scrolling up to the top selector for selecting what you want to study (ie grammar, vocab, kanji). It makes the site slightly annoying to use. 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 just become slightly annoying.

Apps like this

Same category, earning about as much.

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.

No App Store ads in the EU
None in the last 90 days.

Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.

Growth research

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

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.

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