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Renshuu vs WaniKani: catalog facts
Renshuu	WaniKani
Freemium Free to start learning, with optional paid features.	Freemium The first levels are free; full access requires a subscription.
Android, iOS, Web	Web
Vocabulary, kanji and grammar in one place Dictionaries filterable by JLPT level	Structured path through 2,000 kanji and 6,000 words Mnemonics for radicals, kanji and vocabulary
Japanese only Requires an account to track progress	Fixed lesson order that cannot be rearranged Covers kanji and vocabulary only, not grammar
Downloadable app, Web application	Web application
Closed source	Closed source
License not stated	License not stated
Account 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 September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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