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Renshuu vs TABI: catalog facts
Renshuu	TABI
Freemium Free to start learning, with optional paid features.	Free Free and open source under the GPL-3.0-or-later license.
Android, iOS, Web	Android
Vocabulary, kanji and grammar in one place Dictionaries filterable by JLPT level	Covers kana, phrases, signs, menus and train travel Uses varied question types and practical scenarios
Japanese only Requires an account to track progress	Teaches Japanese only Audio questions need an installed Japanese text-to-speech voice
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 8, 2026

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