AI Offline Translator
Free Offline AI · 29 Languages
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Free on-device AI translator: 29 languages, photo & voice. PDF/DOCX/TXT file translation now FREE. Model downloads once, then offline forever — even in Airplane Mode.
AI Offline Translator runs a real large language model on your device. No cloud, no account, no internet after setup.
== Free, plus one optional one-time purchase ==
Free forever: whole-file translation — import and translate PDF, DOCX, TXT, MD and RTF documents at no cost — plus text translation in 29 languages (up to 1,000 characters per translation on the Translate screen), photo translation with OCR, voice translation, favorites, history and PDF export.
Optional one-time in-app purchase ("Long Text Pro"): full translation of texts longer than 1,000 characters, up to 10,000 characters, on the dedicated Long Text page. Try before you buy — longer texts are translated free up to the first 1,000 characters, so you can judge the quality before unlocking. No subscription, and nothing else is locked.
== Setup: one download, then offline forever ==
The app ships without a model. On first launch, download it once over Wi-Fi (main model about 1.1 GB, lightweight about 400 MB). After that everything runs offline, Airplane Mode included. The app checks your free storage space and warns you before downloading.
== Why offline matters ==
- Your text never leaves the device: no server, no upload, no analytics SDK, no ads.
- Works on a plane, in the subway, or abroad without roaming.
- No account, no sign-in, no rate limits, no monthly fee.
== Features ==
- 29 translation languages, any-to-any, source language detected automatically
- Whole-file translation — PDF, DOCX, TXT, MD, RTF — completely free
- Long Text page for texts up to 10,000 characters
- Photo translation with on-device OCR
- Voice translation (7 languages via Apple's on-device speech packs) with text-to-speech readback
- PDF export with clean formatting, favorites, and history encrypted on device
- Interface in 50 languages, follows your iOS system language
- Native iOS design, light/dark/system, Dynamic Type and VoiceOver supported
== Engine ==
Qwen2.5 1.5B running on llama.cpp with Metal GPU acceleration — fast, and close to cloud quality for everyday text.
== Permissions ==
Camera, photo library and microphone are requested only when you use photo or voice translation. All processing happens locally.
== Contact ==
Questions or suggestions: birdflyingtodie@gmail.com
Privacy policy: https://sundamingbai.github.io/translator/privacy-policy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• File translation is now completely free — import and translate whole PDF, DOCX, TXT, MD and RTF documents, no purchase needed
• New "Long Text Pro" (one-time purchase): full translation for texts over 1,000 characters, up to 10,000 characters, on the Long Text page
• Free preview: for longer texts we translate the first 1,000 characters free, so you can check the quality before unlocking
• Bought the previous in-app purchase? Long Text Pro is yours automatically — your entitlement was migrated, no re-purchase
• PRO badge moved from file import to the Long Text entry; everything still runs 100% offline
The developer, 大明 孙, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 大明 孙
- Size
- 11 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 50 more
- English, Afrikaans, Arabic, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Irish, Italian, Japanese, Kannada, Kazakh, Korean, Latvian, Lithuanian, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Long Text Pro $0.99
- Copyright
- © 2026 Daming Sun
