Comparison

AI Offline Translator vs Sentio

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

AI Offline Translator

Translate documents, text, photos, and voice offline with a powerful on-device AI model. Enjoy privacy and convenience without an internet connection after initial setup. Offers free file translation and optional upgrades for longer text.

Highlights
  • Offline translation for 29 languages
  • Whole-file translation (PDF, DOCX, TXT)
  • Photo translation with OCR
  • Voice translation with text-to-speech
  • Long text translation up to 10,000 characters
  • PDF export with encryption
  • No internet required after setup
Features
Read full description

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 โ€” import and translate PDF, DOCX, TXT, MD and RTF documents at no cost โ€” 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 โ€” 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 โ€” PDF, DOCX, TXT, MD, RTF โ€” 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 โ€” 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

About

Sentio

Features
Read full description

Sentio turns the sensors already in your iPhone โ€” microphone, camera, torch, accelerometer โ€” into a set of measurement tools, and keeps every measurement on the device. WHAT IT DOES Sentio provides a growing registry of measurement tools. Each one uses the phone's sensors in a specific way: โ€ข Spectrum โ€” record ambient sound and see its frequency content, peaks and decay โ€ข Color and light โ€” measure colour and brightness with the camera's exposure locked โ€ข Blinking โ€” detect and time periodic light sources โ€ข Knock โ€” tap an object and capture how it rings and how quickly it damps โ€ข Polarization โ€” measure how much light passes through at a quarter turn โ€ข Composite tools that drive the torch or the haptic engine and measure the response Some tools use two phones together โ€” one emits, one measures โ€” over a direct Bluetooth link, with no account required. ORGANISE WHAT YOU MEASURE Measurements attach to a simple catalog: categories, objects, and the scenario you measured them for. You can also capture first and file it later. Any measurement can be given a ground-truth label after the fact, so a session of guesses becomes a record you can actually check yourself against. Guided activities chain several tools into one procedure when a single sensor is not enough. OFFLINE BY DEFAULT Everything runs on the device. There is no account, no upload step, and no network call needed to take or view a measurement โ€” the app is fully usable in Airplane Mode, and that is the normal way to use it. Signing in with Apple or Google is entirely optional and does one thing: sync your own catalog between your own devices. HONEST ABOUT WHAT IT IS NOT Sentio is an instrument, not an oracle. It reports what the sensors measured and how it derived the numbers. It does not claim laboratory accuracy, it is not a medical or diagnostic device, and it should not be used to make safety decisions. Phone sensors vary between models; the tools are built around relative and resonance-based features precisely because absolute levels are not comparable across devices. PERMISSIONS โ€ข Microphone โ€” required by the audio tools, used only while a measurement is running โ€ข Camera โ€” required by the optical tools โ€ข Bluetooth โ€” only for the two-phone tools, to find the other handset No advertising, no analytics SDK, no third-party trackers.

Screenshots

AI Offline Translator4 screens
Sentio4 screens

Verdict

The call

The clearest difference is update cadence: Sentio at every 3 days against AI Offline Translator's every 5 days. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AI Offline Translator ships an update every 5 days, Sentio every 3 days. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

Scorecard1 real difference ยท 7 level
AI Offline Translator versus Sentio: the parameters behind the verdict, then further details
ParameterAI Offline TranslatorSentio
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 daysEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.017.0
Further details โ€” not scored
Size11 MB16 MB
Age rating4+4+
Developerๅคงๆ˜Ž ๅญ™Polina Bloshchitcyn

In-app purchases

None

AI Offline Translator

No in-app purchases

None

Sentio

No in-app purchases

Questions

Is AI Offline Translator free?
AI Offline Translator is free to download, with no in-app purchases.
Is Sentio free?
Sentio is free to download, with no in-app purchases.
Do AI Offline Translator or Sentio have ads?
Neither AI Offline Translator nor Sentio shows ads.
Which is updated more often, AI Offline Translator or Sentio?
AI Offline Translator ships an update every 5 days, and Sentio every 3 days. Most recently, AI Offline Translator was updated on October 14, 2026 and Sentio on October 4, 2026.

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