Free
Every feature on the free plan. No credit card to start.
Why BufferMind
The world's #1 translation engine
BufferMind runs on Soniox, the speech engine that tops independent accuracy benchmarks. Every word hits the screen as it's spoken, and the translation lands about a second behind — through accents, fast talkers, and mixed languages.
Today's most powerful AI models
Andy, your AI tutor, runs on Claude Sonnet 5 and Opus 5 — the most capable models Anthropic has ever shipped. Summaries, answers, and study notes with real understanding behind them.
Simultaneous interpretation
Put on your headphones and the translation is spoken to you, live — only you hear it, never the room. Like carrying a personal interpreter.
Synced to the cloud, on every device
Record on your phone, pick it up on your Mac or the web — every session syncs automatically. Audio uploads while you're still recording, so a dead battery or a crash can't take your recording away.
Hold to talk, translated both ways
For face-to-face moments: each side holds a button and speaks their own language — the translation appears and speaks out loud instantly. Travel, small talk, real conversations.
Better with classmates
Chat, call, and share recordings with friends — send a whole lecture to a classmate, swap notes, review together.
Free. Private.
On every screen.
One app, three platforms. Every feature unlocked. Your data never used to train models.
Your data stays yours
Mic activates only when you tap Record. Delete anytime. Never used for AI training.
iPhone · iPad · Mac · Web
Record on one device, review on another. Everything syncs automatically.
FAQ
Does BufferMind work for online meetings?
Yes. Use it during Zoom, Google Meet, or in-person conversations. Tap Record and BufferMind transcribes and translates in real time.
Do I need an internet connection?
Yes. Real-time transcription and translation stream audio to the cloud, so a stable internet connection is required. We're exploring on-device modes as lightweight models mature.
What languages are supported?
60+ languages are auto-detected for transcription and translation — including English, Chinese (Mandarin & Cantonese), Spanish, Hindi, Korean, Japanese, French, German, Arabic, Russian, and more — powered by Soniox's unified model. The BufferMind app interface is currently localized in 6 languages.
Is my audio stored? Is it used to train AI?
No. We never use your recordings to train AI models. Audio is streamed to our speech-to-text partner (Soniox) only during transcription and is not retained afterward. Cloud copies of your sessions are tied to your account, encrypted, and can be deleted anytime from Session History.
Is it really free?
Yes. The free plan includes every feature with a monthly allowance of about 3 hours of transcription (shared with AI questions and summaries), and no credit card to start. Pro raises it to about 25 hours a month for $9.99/month or $19.99 per 3-month term; Max offers about 80 hours for $19.99/month or $44.99 per term. Cancel anytime from inside the app.
Can BufferMind tell different speakers apart?
Yes. Enable speaker identification and BufferMind labels "Speaker 1," "Speaker 2," and so on within a session. Voiceprints are processed only during that session by Soniox and are never stored by us.
Is the Mac app available?
Yes — download directly from the Download for Mac button at the top. Apple Silicon (M1 and newer) required. iPhone and Web are also available — sign in with the same account and your sessions sync automatically across devices.