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Nihonoari vs Kana: catalog facts
Nihonoari	Kana
Free Free and open source under the GPL-3.0 licence, with no ads or in-app purchases.	Free Free and open source under the GPL-3.0 or later licence.
Android	Linux
Focused only on Hiragana and Katakana practice No adverts or in-app purchases	Focused on learning Japanese characters Simple desktop app
Covers kana only, not kanji or vocabulary No GitHub releases; installed through F-Droid	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.