Instant, private translation — no signal, no account, no cloud.
PlainSpeak translates speech, text, signs, and menus entirely on your phone — built for the exact moments a language barrier is most dangerous to have: crossing a border, a disaster zone with no signal, a medical visit, a country where data is a luxury. Everything you say stays on your device. Nothing is ever sent anywhere.
The entire loop — open, speak, understand — happens on the phone in your hand.
No sign-up, no login, no setup screen standing between you and a translation.
Talk, type a message, or point the camera at a sign, menu, or document.
Translation happens on-device, streaming as you speak — no waiting on a network round-trip.
Not the audio, not the text, not a log of the conversation. It stays exactly where it happened.
60 features, built and tested — the ones that keep you safe and understood are free, permanently.
Two-way voice translation, streaming as you talk, with confidence flags on anything uncertain.
FreeSigns, menus, and documents translated in place. Snap-and-translate is free; live AR overlay is Pro.
FreeProHold the phone between you and someone else — it detects who's speaking which language automatically.
Free"I need police," allergy and medication alerts, legal-rights phrases — instantly accessible, even from the lock screen.
Free, foreverText-first conversation mode, large-text display, adjustable speech rate, and a sign-language reference.
FreeDownload what you need before you go. No connection required once a pack is on your phone.
FreeA reason to keep the app on your phone even between translations — genuinely useful, every day.
FreeWayfinding phrases for getting around, plus honest, low-risk cultural etiquette notes for wherever you're headed.
FreeProSave any translation, then review it with spaced repetition and practice saying it back against real audio.
ProAuto-detects the language you're speaking and visibly flags any translation it isn't sure about, instead of guessing silently.
FreeBeyond two people — round-robin conversation mode for 3 or more languages at once, for families, meetings, and negotiations.
ProStructured menu and document scans that come back as an organized, translated list — not raw text soup laid over a photo.
ProSave and favorite the phrases you use most, organized by trip or context, always one tap away — no digging through menus.
FreeProPaste in a message, compose a reply, or translate text shared in from any other app — no copy-paste dance required.
FreeOn-device processing, shown on screen, not just claimed in a settings page. Free with ads; remove ads with a one-time purchase.
FreeRoughly three in four features ship free, forever. Pro sells convenience and polish — never the ability to communicate.
The questions worth asking an app that promises this much privacy.
Yes — every free feature works with your phone in Airplane Mode. The only exceptions are optional: downloading a Pro voice model, or fetching current currency rates.
Everything happens on your phone. There's no account, no server, and nothing you say or type is ever sent anywhere — including for Pro features. The free app does show ads from Google AdMob; they never see your conversations, and the app does not show Apple's tracking prompt, so ads are not personalised using Apple's advertising identifier. You don't have to take our word for it: turn on Airplane Mode and it still works.
The free app is supported by ads served by Google AdMob. Open Settings in the app and choose Remove ads for a one-time purchase; if you already bought it, use Restore Purchases. Ads never see what you say or type.
Where the law requires it (for example in the EEA and UK), the app asks for your consent through Google's consent form before showing ads. You can decline, and you can change your choice in your device settings. Learn more in How Google uses data in advertising.
PlainSpeak uses each platform's largest on-device translation catalog — dozens of languages, not a fixed curated list. Each language pack downloads automatically the first time you translate a new pair, no manual download step.
Convenience and polish — live camera overlay, unlimited saved phrases and language packs, group conversation mode, structured document scans, and learning tools. Never the ability to communicate: every safety and accessibility feature stays free, permanently.
Anyone who's ever been stuck without a shared language — travelers, immigrants, mixed-language families — and especially people in situations where a data connection or an account isn't something they can count on: a border crossing, a disaster zone, a medical visit.
Right now, on Android — get PlainSpeak on Google Play. The iOS version has been submitted and is currently in review with the App Store; check back here for the download link once it's approved.