Deep system integration
On iOS, set oTranslate as your default translation app in the system Translate sheet. On Android, access it from the text selection menu ("Translate with oTranslate"), Quick Settings tile, or 1×1 home screen widget.
Built for iOS & Android · System Text Selection
Translation where
the text already is.
Select text in any app — tap Translate on iPhone or choose "Translate with oTranslate" on Android — and get instant translations in a native floating sheet. oTranslate provides fast on-device results offline, adds streaming AI translation with nuance notes, and lets you ask follow-up questions without copying into a separate chat.
Free to download · Available on iOS & Android
9:41●●● ▰
oTranslate
English⌄⇄简体中文⌄
OriginalExpand
Make every word clearer.
◖))▣☆
TranslationOn device
让每一句话都更清晰。
◖))▣Free
AI translationoTranslate
让每个词都更容易理解。
Natural wording that keeps the intent of the original sentence.
TranslateExplainSummarizeFix grammar
▧Ask anything about this…↑
On-device firstStill there without Stars
Ask about a photoVision questions in the sheet
1 tapfrom selected text
2 pathson-device + AI
5 Starsper photo question
No accountneeded to begin
More than a translated line.
A way to understand it.
oTranslate keeps the fast answer visible, then puts the deeper tools directly beneath it. Use only the part you need.
Free on-device offline translation
Powered by Apple Translation on iOS and Google ML Kit on Android. Instant offline translation remains free and unmetered without spending Stars whenever language packs are installed.
Context-aware AI translation
Stream AI translations that understand idioms, nuance, and cultural tone. Tap mode chips to explain phrases, summarize passages, correct grammar, polish writing, or draft replies.
Questions about photos
Attach a screenshot, sign, menu or worksheet photo. Ask specific questions and let the vision AI answer what is actually visible, with tap-to-enlarge full-screen view.
Listen, save, and recall
Hear natural pronunciation with high-quality neural voice selection, copy results with one tap, and save key phrases to your library with built-in spaced repetition recall (SRS).
Language choices that persist
Your source and target language pairs sync across reading modes, quick sheets, and the main app, with smart auto-detection and automatic direction swapping.
From selection to understanding
without breaking your flow.
The floating sheet is the workspace. oTranslate does not make you rebuild the context somewhere else.
Select and translate
Highlight text in any app on iOS or Android. On iPhone, choose Translate to open the system sheet. On Android, choose "Translate with oTranslate" or tap the Quick Settings clipboard tile.
Compare the results
Read the instant on-device translation first. If you need deeper nuance or tone, stream the AI translation with contextual explanations.
Ask follow-ups & memorize
Ask why a phrase is used, request a summary, polish sentences, attach photos, or save phrases into spaced-repetition recall cards for offline review.
Two translation paths,
one clear interface.
The on-device and AI results solve different problems. oTranslate labels both so you always know what you are reading.
Capability
On-device translation
AI translation
Works without Stars
Yes (Apple Translation & Google ML Kit)
No — AI spends Stars
Language resources
Free downloadable offline packs
Uses an internet connection
Literal translation
Fast, direct & offline
Available
Tone and explanation
Translation only
Built for follow-up & modes
Photo questions
Not included
5 Stars per question
Your text is for translation,
not for your ad profile.
The app separates language content from advertising. Translation text and photo questions are never sent to advertisers.
No account required
You can start without creating a profile, providing an email address or choosing a password. Translation history and preferences are kept in app storage on your device.
Content is sent only when needed
On-device translation stays on the device. AI requests send the text, question or attached image needed to produce the answer to our service and model providers.
Rewarded video is your choice
The host app may offer an optional rewarded video for Stars. Consent and tracking choices are respected, and AI content is not shared with ad networks.
Apple & Google handle payments
Star packs and Premium subscriptions are purchased securely through Apple StoreKit or Google Play Billing. Payment data is processed by the platform stores; the app only receives entitlement status.
Read the complete Privacy Policy and Terms of Use.
Questions, answered.
How do I use oTranslate on iPhone?
Open iPhone Settings, choose Apps, Default Apps, then Translation and select oTranslate. On supported iOS versions, future Translate actions open oTranslate directly in the system sheet.
How do I use oTranslate on Android?
Select text in any app (Chrome, Gmail, WhatsApp, etc.) and tap Translate with oTranslate in the selection popup (or in the ⋮ overflow menu). A Material 3 half-height sheet appears with the translation and the option to replace editable text. You can also add the oTranslate Quick Settings tile or 1×1 home screen widget to translate your clipboard instantly.
Why can an on-device language need a download?
Apple and Google provide the on-device language models used by the offline translation path. If a required language pack is not installed, download it when prompted and try again. Availability differs by language pair and OS version.
What happens when I run out of Stars?
Supported on-device offline translation remains completely available and free without Stars. Cloud AI translation, Ask AI, and vision questions spend Stars. Premium adds a finite grant at each verified subscription transaction, but it does not make the Star balance unlimited. A failed AI request is refunded when it does not produce an answer.
How much does a photo question cost?
A question with an attached photo costs five Stars. A regular text AI operation normally costs one Star; some translation engines can have a lower server-configured cost.
Can I practice saved words and phrases?
Yes. Tap the star icon on any translation to save it to your library. Practice saved phrases with spaced repetition recall (Review again in 10 minutes, or Remembered in 1, 3, 7, 14, 30, and 60 days) entirely offline without spending Stars.
What does Premium include?
Premium removes ads while active and grants Stars once for each newly verified purchase or renewal: 300 Stars on the weekly plan, 800 on the monthly plan, or 6,600 on the yearly plan. Manage or cancel the subscription in your Apple Account or Google Play settings.
Does the app collect my translation history in an account?
No account is required. History, favorites, balances and language preferences are stored locally on your device.
Where can I get help?
Visit the support page for setup and troubleshooting, or email [email protected].
Keep the text in front of you.
Make the meaning clearer.
Install oTranslate on iOS or Android, and turn selected text into instant results, deep explanations, and lasting language recall.