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Du Chinese vs Pinyin Web & EPUB and topolects: catalog facts
Du Chinese	Pinyin Web & EPUB and topolects
Freemium Free to try, with paid plans for full access to the library.	Free Free and open source under the Apache-2.0 license.
Android, iOS, Web	Android
Large library graded by level Instant word lookup and grammar notes	Adds pronunciation guides to any Chinese website or EPUB Supports Mandarin, Cantonese, Teochew and Wenzhou
Full library requires a paid plan Focused on reading and listening rather than speaking or writing	Android only Aimed at Chinese learners; translations are word by word
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
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 2, 2026

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