Sayverse

For travelers, expats, and anyone living between languages.

Have a real bilingual conversation — speak in either language, Sayverse detects which one and translates to the other in real time. Each turn lands in the dialogue thread with both halves visible. Or quick-translate a single phrase by voice or text.

Built on OpenAI Whisper (voice transcription) and GPT-4o-mini (translation). No accounts, no tracking, no servers — your data goes straight from your phone to OpenAI through your own API key.

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CONVERSATION MODE Tap record, speak in either language. Sayverse detects what you said and routes the translation. Optional voice playback reads each turn aloud.

QUICK TRANSLATE Voice or text, single phrase. Pick source and target, speak or type, get a clean translation card with playback and copy.

15 LANGUAGES Spanish, English, Russian, Ukrainian, French, German, Italian, Portuguese, Chinese, Japanese, Korean, Arabic, Hindi, Turkish, Polish.

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PRIVACY FIRST • BYOK — your OpenAI API key is stored in your device's keychain. Sayverse has no servers; data never routes through us. • Front-loaded consent — before any voice or text leaves your device, Sayverse shows what's used for what. Revoke any time. • No accounts, no tracking, no analytics.

UNDER THE HOOD • "via OpenAI" persistent indicator on every screen — you always know who's processing your data. • Live voice level indicator while recording — visual confirmation the mic is hearing you. • Bilingual auto-detect — for conversations, Sayverse runs the transcription twice in parallel (one per pair language) and picks the more confident result. No more "spoke Spanish, got transcribed as English." • Conversation history saved to your device — browse, replay, delete.

WHAT YOU NEED An OpenAI account with API credit at platform.openai.com. Typical conversation turn costs under half a cent. Your key never reaches Sayverse.

FREE, NO IAP, NO SUBSCRIPTIONS Sayverse is free. No in-app purchases or subscriptions. Open source on GitHub.

PRIVACY POLICY https://sayverse.app/privacy/