One phone between you. No internet needed.
Sideby translates your conversations out loud, entirely on your phone. Speak your language, the other person hears theirs, even in airplane mode.
Get it on Google Play2 days free, everything unlocked, no card needed.
How it works
Download your languages
About 30 MB per language, once, on Wi-Fi.
Put the phone between you
Each person gets their own mic and their own half of the screen.
Talk
Hold the mic, speak, let go. Sideby translates and reads it aloud.
Made for real conversations
No signal needed
Speech recognition, translation and voices run on your phone. On a plane, in the metro, abroad without data.
Stays on your phone
No account, no ads, no tracking. Sideby has no servers: your conversations stay with you.
Face to face or side by side
Split the screen so the other person reads their half, or sit side by side with one mic each.
Read aloud
Each translation is spoken by your phone's voices. Tap a sentence to hear it again.
Photo translationPro
Point at a menu, a sign or a label: the translation appears right on the picture.
Phrasebook and historyPro
50+ ready-made phrases for restaurants, transport, hotels and emergencies, plus your past conversations, saved on your phone.
11 languages, any combination
Strong in Asian languages: Mandarin Chinese, Japanese and Korean, alongside 8 European languages.
- 中文
- 日本語
- 한국어
- English
- Français
- Deutsch
- Español
- Italiano
- Nederlands
- Polski
- Português
App available in English, French, Chinese, Japanese and Korean.
Pricing
2 days free
Everything unlocked from the first launch. No card, no automatic charge.
Standard
€4.99 per month
€2.49 per week
- Offline conversations
- Face to face and side by side
- All 11 languages
Pro
€6.99 per month
€89.90 once, for life
- Everything in Standard
- Photo translation
- Phrasebook and favourites
- History and export
- Future Pro features
Prices in euros. Google Play shows the price in your currency. Cancel anytime in Google Play.
Questions
Does Sideby really work without internet?
Yes. Download your languages and the speech model once on Wi-Fi. After that, recognition and translation run on your phone, even in airplane mode. For the spoken translations, install your phone's offline voice data: Sideby shows you how.
Which languages are supported?
English, French, German, Spanish, Italian, Dutch, Polish, Portuguese, Chinese (Mandarin), Japanese and Korean, in any combination.
How does the free trial work?
You get 2 days from the first launch with everything unlocked. No card is needed and nothing is charged automatically. After that, choose Standard or Pro.
How do I cancel a subscription?
In Google Play, tap your profile, then Payments and subscriptions, Subscriptions, Sideby, Cancel. Your plan stays active until the end of the period you paid for.
Are my conversations recorded or sent anywhere?
No. Sideby has no servers: speech recognition and translation run on your phone. History is saved only on your phone, and you can turn it off or delete it at any time.
How much storage does it need?
About 30 MB per language. The recommended speech model takes about 880 MB; a lighter one of 160 MB is available for phones with less space.
Is Sideby available on iPhone?
Not yet. Sideby is available on Android through Google Play.
2 days free, everything unlocked, no card needed.