Does DeepL work offline? No.
Straight answer: DeepL requires an internet connection for every new translation on mobile — only previously saved favorites can be viewed offline, and both DeepL Voice and camera translation are online-only. If you need translation on a plane, abroad without data, or anywhere the signal dies, you need something that runs on the phone itself.
| Rasterdeck Translator | DeepL (mobile, 2026) | |
|---|---|---|
| Works offline | Yes — fully offline | No — internet required for all new translations (only saved favorites offline) |
| Voice conversation | On-device voice-to-voice, offline | DeepL Voice — online-only |
| Camera translation | Yes, offline | Yes, online-only |
| Text quality (online, European languages) | Good on-device models | Best-in-class — DeepL wins |
| Price | One-time from $2.99, no subscription | Free tier (caps); Pro subscription |
| Privacy | Nothing ever leaves the device | Cloud; Pro contractually excluded from training but text still leaves your device |
| Account | None | Needed for favorites / Pro |
| Languages | 40+ | About 33 |
Credit where due: for online text translation of European languages, DeepL's quality is the best in the business — if you have a connection and need nuance, it's excellent. This app is built for the other situation: no connection at all, live camera scanning, and conversations that never leave your device.
Common questions
Does DeepL work offline?
No. DeepL needs an internet connection for every new translation on mobile. Only saved favorites are viewable offline, and DeepL Voice and camera translation are online only.
What offline translator has the best privacy?
Rasterdeck Translator runs entirely on the device with no account and no data collection, so nothing leaves the phone.
Is DeepL better than Rasterdeck Translator?
For online text quality in European languages, DeepL is excellent. For fully offline voice and camera translation with no account, Rasterdeck is built for that and DeepL cannot do it.
How much is Rasterdeck Translator?
It is a one-time purchase from 2.99 USD, with no subscription and a free trial.
How many languages does it support?
42 for text, and 40 for voice and photo translation.
Free trial, then a one-time purchase — no subscription. Standard $2.99, OCR $9.99, Pro $19.99, or Everything $24.99.