Learn Japanese with Kakugo
About this app
Kakugo is an application that helps learning Japanese. It includes multiple tests to memorize hiragana, katakana, and kanji and adapts to the user's learning pace.
One of the biggest difficulty with learning Japanese is memorizing kanji and vocabulary. While learning them by just reading and writing them everyday may work, the more kanji you know, the harder it gets and the more time it takes to revise them all. Proper tools can help you memorize these huge amounts of knowledge to more quickly become a fluent Japanese speaker.
Kakugo is one of these tools. It helps learning and revising kanji and vocabulary in an efficient manner. It uses Spaced Repetition in a unique way that adapts to the user's pace. If you only have time to revise 30 kanji every day, or if you can revise as much as 100 kanji every day, Kakugo will adapt and test you on the right kanji at the right time for you to memorize them. There is no "kanji of the day" list to revise, you can start and finish a session whenever you feel like it.
Kakugo also features a wide variety of tests to help you find the best ways that will help you learn Japanese.
Features include
* Hiragana, Katakana quizzes * Kanji quizzes by reading and meaning * Kanji test by part composition * Kanji writing test * Vocabulary quizzes by reading and meaning * Unique spaced repetition formula that adapts to your own learning pace * Unlimited quiz sessions that allow you to take a quiz at any time, for however long you want, useful to efficiently spend commuting time * Show similar-looking kanji in answers to teach you the differences * Kanji and vocabulary sorted by JLPT level * Clicking on kanji opens aedict3 (a non-free Japanese dictionary) or jisho.org * Optimized tablet support * Open source * No ads * No internet access required * Supported languages: English, French * More to come
Credits
* The kanji quizzes are based on kanjidic. * The vocabulary quizzes are based on JMdict. * The kanji similarity database comes from https://minerva-access.unimelb.edu.au/handle/11343/35336 and http://lars.yencken.org/datasets/phd/ * The kanji composition and drawing database comes from KanjiVG.
Licensed under GPL-3.0-or-later, by Philippe Daouadi.
What's New in v1.43
Imported from the F-Droid repository index.
Version history
Jul 13, 2026 · 15.5 MB · Android API 21–36 · code 101
Imported from the F-Droid repository index.
SHA-256 e06913cf32afd2990a7328ac0eaea3dca8674da5558ae9e6b95eb7497129b2a4
Jul 2, 2026 · 15.5 MB · Android API 21–36 · code 100
Imported from the F-Droid repository index.
SHA-256 9a5ab63bafbe673a323ce0188af344d681c37d53ee6d56b1c152171ccb5621bb
Mar 15, 2026 · 15.5 MB · Android API 21–36 · code 98
Imported from the F-Droid repository index.
SHA-256 a14c4541115fad871db821f7daedddad04efb52710cbcbf64b82a30ee4c60c90
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.kaqui is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.42 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Kakugo first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Kakugo, and a listing is removed when the evidence for it stops holding up.
Get Kakugo
Every source we list for org.kaqui is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
e06913cf32afd2990a7328ac0eaea3dca8674da5558ae9e6b95eb7497129b2a4
Signing certificate
46dbe86718284913a654efc388649f7148a31926baf9498af0c1bfece87fb35f
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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