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Kakugo vs Kana: catalog facts
Kakugo	Kana
Free Free and open source under GPL-3.0.	Free Free and open source under the GPL-3.0 or later licence.
Android	Linux
Covers hiragana, katakana and kanji Adapts review to the learner's pace	Focused on learning Japanese characters Simple desktop app
Focused on memorisation, not grammar or speaking Android only	Covers characters only, not a full language course Linux only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-or-later
Not stated if an account is needed	No account 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 1, 2026

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