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. Each phrase can be spoken aloud with word-by-word highlighting, and there is a hand-checked 14-language phrasebook for 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 functional free plan: eligible new subscribers may receive a 3-day trial, followed by $4.99 per month or $29.99 per year in the US. 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.