Public TestFlight beta

Translation that keeps the conversation moving.

Type or speak across 57 languages, hear translations aloud, and move into continuous Live Translation when you need a hands-free conversation.

Try Sema on TestFlightExplore the app

Built for iPhone. Text and Talk are available on the Free plan; Live Translation requires Sema Premium.

Sema Text automatically detecting English and translating it into Hindi in light mode
Sema Talk translating Korean speech to English in dark mode
Say it naturallyAuto-detect, translate, and play it back
57Text & Talk languages
3ways to translate
13Premium Live outputs
1clear iPhone experience

Meet Sema

Choose the right rhythm for the moment.

A quick typed phrase, a spoken exchange, or an ongoing conversation. Sema gives each one a focused way to translate.

Text translation

When typing is the easiest way in.

Write a message, paste an address, or prepare a phrase before you need it. Sema keeps the source and translation together so the meaning stays easy to check.

  • 57 supported languages
  • One-tap copy and spoken playback
Sema Text translating an English delivery message into Hindi in dark mode
Talk translation

Speak, listen, and keep moving.

Tap to talk and Sema turns speech into translated text and audio. It is a natural fit for quick questions, introductions, and everyday exchanges.

  • Automatic source-language detection
  • Replay audio at a comfortable speed
Sema Talk automatically detecting Japanese speech and translating it into English in light mode
Live TranslationPremium

Let the conversation flow.

Set the phone between you and keep talking. Sema listens continuously, detects the incoming language, and translates into your selected output language.

  • 13 supported output languages
  • Continuous streaming with Sema Premium
Sema Premium Live Translation translating English to Spanish in light mode
57languages

for Text and Talk

Broad by design

More than a handful of demo pairs.

Search a broad language catalog, swap direction when you need to, or let Talk detect the source automatically. These are just some of the languages available:

  • Spanish
  • French
  • Portuguese
  • German
  • Italian
  • Chinese
  • Japanese
  • Korean
  • Hindi
  • Arabic
  • English
  • Swahili
  • Russian
  • Vietnamese
  • Indonesian

Plus 42 more supported languages in the full catalog.

Live Translation uses automatic input detection.

Premium Live output is currently available in English, Spanish, Portuguese, French, Japanese, Russian, Chinese, German, Korean, Hindi, Indonesian, Vietnamese, Italian.

Useful after the answer

Translation you can actually do something with.

Hear the result

Play translated speech aloud and adjust the speed when you want more time to listen.

Keep what helped

Return to recent translations and replay saved audio from your on-device history.

Feels at home on iPhone

A focused interface works naturally in light or dark appearance without getting in the conversation's way.

Sema Premium Live Translation translating English to French in dark mode

Sema Premium

Stay in the conversation without stopping to tap.

Live Translation streams speech as it happens, automatically detects the incoming language, and keeps your selected translation visible while the conversation continues.

  • Continuous Live Translation
  • 13 supported output languages
  • More translated-speech voices
  • Higher usage allowances across Sema
Try Sema on TestFlight

Live Translation and additional voices require an in-app Sema Premium subscription.

Now in public beta

Bring a better translator into your next conversation.

Install Sema through TestFlight and help shape the experience before its App Store launch.

Join the TestFlight beta