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Danmu Bilingual Keyboard

Type Chinese. Learn English as you go.

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Danmu is an iOS Pinyin keyboard that shows English glosses alongside Chinese word candidates. Type as usual, choose a Chinese word, and pick up vocabulary without switching to a dictionary. Pinyin input and glosses work offline; learning data stays on your device, and the keyboard does not require Full Access. The companion app includes a vocabulary notebook with editing and JSON import/export. Currently available on the China App Store.

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PH · launched Oct 17, 2026 · 1 upvote (top 67%)

Similar launches

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Could you build this?

Partial Building an iOS custom keyboard extension requires strict memory constraints and an offline Chinese Pinyin IME engine, which is notoriously tricky to implement cleanly via vibe coding.

What it would actually take: To build this, one needs a Swift-based iOS Custom Keyboard Extension (UIInputViewController) packaged with a compact trie-based Pinyin input engine (e.g., using open-source engines like Rime or custom SQLite FTS/trie) and an offline Chinese-English bilingual dictionary (e.g., CC-CEDICT). The hard part is fitting the input engine, dictionary lookup, candidate rendering, and keyboard view within iOS's tight 30MB keyboard memory ceiling without crashing or lagging. Specialized expertise in native iOS memory management and tokenized IME algorithms is necessary.

Competitors

Other products that read as similar to this one : 258 launches clear the similarity bar, closest 8 shown.

Attention rank: #123 of 259 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 326 days after the earliest competitor.

Other launches for this product