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Kakugo vs Jamu: catalog facts
Kakugo	Jamu
Free Free and open source under GPL-3.0.	Free Free and open source under AGPL-3.0-only.
Android	Android
Covers hiragana, katakana and kanji Adapts review to the learner's pace	Includes kana and number study material Provides quizzes and NHK Easy News
Focused on memorisation, not grammar or speaking Android only	Available for Android
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: AGPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.