Yiren AI

Yiren AI is a fully offline AI translator and study tool. Every AI model runs locally on your device — it works without internet, and your text, photos, voice, and chats stay on your phone and are never uploaded to any server. Features · Chinese ⇄ English translation — natural, single-language output, with voice and camera input · AI chat — on-device large language model with selectable personas and automatic long-context handling · Camera translation — snap a photo of text for line-by-line translation · Voice translation — speak and have it transcribed offline, then translated · Vocabulary books — paste or import words; AI extracts entries automatically; edit, add, one-tap dedup · Spaced-repetition review (SRS) — daily due cards, streaks, a "hard words" deck, and local reminders · History & favorites — revisit translations, star them into your review pool · Backup & restore — move all your data in a single file when switching phones Privacy first No account, no personal data collection, no ads, no tracking. All AI inference happens on-device. The app only goes online when you choose to download a model or check for updates — it never sends your data. About the model First-time use requires a one-time in-app download of the offline AI model (~2.4 GB, Wi-Fi recommended). After that the app works fully offline, forever. What’s New · Added a confirmation prompt before downloading AI models, clearly showing the download size so you can choose whether to proceed · Faster model downloads outside mainland China with the official CDN source now used by default · Downloads resume automatically and continue in the background or with the screen locked · Much faster model downloads with parallel chunked downloading · More resilient: each segment resumes independently; downloads continue with the screen locked or the app in the background