The moment you most need a translator (a pharmacy counter, a train platform, a menu you can’t read) is usually the moment you have no signal. And the translators most people reach for carry a quieter cost: to work, they send whatever you type to a company’s server to be processed. Sometimes that’s a medical symptom. Sometimes it’s an address. Sometimes it’s just where you’re staying tonight.
No spying accusations here. It’s a design question, and a fair one: does the translation happen on your phone, or on someone else’s computer?
Two kinds of “offline”
“Works offline” hides a fork, and it matters.
One kind is downloaded language packs. Google Translate and Apple Translate offer them on iPhone; Microsoft documents offline packs for its Android app, but not its current iOS app. With a supported pack installed, translation can run on the device with no signal. Google’s coverage is broad, but the exact offline languages and features change, so check the current app before a trip.
Their online and offline behavior differs. Apple says content may be sent to Apple for online translation; downloading both languages and enabling On-Device Mode forces local translation. Google documents offline translation for supported downloaded language pairs. Pocket Lingo has no built-in cloud-translation fallback. Its one external handoff is optional: after declining a result, you can explicitly choose to open the query in web search.
The other kind is on-device by construction: the translation model already lives on your phone. That’s the category Pocket Lingo is built in; only an optional web search you explicitly choose opens the query externally.
The comparison
Data handling as verified on August 10, 2026. A competitor can change its policy, so check the current one before you trust any app with something sensitive.
| Translator | Where it translates | Account | Fair note |
|---|---|---|---|
| Pocket Lingo | Translation runs on-device; optional web search opens externally only by choice | None | In-app translation works in airplane mode |
| Apple Translate | May use Apple online services; on-device with downloaded pairs and On-Device Mode | None | Free and built in |
| Google Translate | Online features plus offline translation for supported downloaded pairs | None to translate; account features are optional | Broad language coverage |
| Microsoft Translator | Online by default; Android documents offline text/camera packs, current iOS does not | None for basic use | Free mobile apps and Bing web translator |
| iTranslate | Internet required outside downloaded Offline Mode | Account optional; Pro required for Offline Mode | Offline packs are a paid feature |
| DeepL | DeepL-controlled server infrastructure, including AWS | Account for Pro | Internet connection required |
How to actually pick
Ranked by what you care about most:
- Broad language coverage and mature travel features → Google Translate. Check that the source and target packs you need support offline use before departure.
- Natural cloud translation and you have a connection → DeepL. It requires internet and processes content on DeepL-controlled infrastructure, so treat anything you paste into it accordingly.
- Free, already on your iPhone, willing to flip on downloaded languages → Apple Translate. Private offline, no account, zero cost. A great baseline that ships with the phone.
- A travel-built translator that’s offline and account-free by design → Pocket Lingo.
Where Pocket Lingo fits
We didn’t build Pocket Lingo to out-language Google. We can’t, and claiming otherwise is exactly the kind of thing this blog exists to avoid. We built it for one narrow situation done well: you’re abroad, the signal is gone or expensive, and you need to say the right thing right now.
So translation runs on-device, using Apple Intelligence where available or an optional enhanced model on other supported hardware. The active model determines coverage; the enhanced model supports up to 22 languages. When a compatible system voice is installed, each phrase can be spoken aloud with word-by-word highlighting. A hand-checked 14-language phrasebook covers the moments travelers actually hit. Camera and menu translation plus two-way conversation are included with the rest of the app under one Pro plan. There is no general free translation or learning tier, but Rescue Kit remains available without a subscription or model. The App Store shows the current local monthly and yearly prices and any introductory offer for which a customer is eligible. Saved translations remain readable, searchable, exportable, and deletable after access ends.
That last part is the whole point. Apple Translate can also process downloaded pairs on-device when On-Device Mode is enabled; DeepL currently requires a connection. Pocket Lingo removes that mode choice from translation itself: the words stay on the device unless you explicitly choose its optional external web-search handoff.
You can see exactly how Pocket Lingo works on its app page, or browse the language-by-language guides on our offline translator pages.
The private default is simple: translation stays in your pocket, and an external search happens only when you choose it.