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BufferMind

BufferMind

Real-time AI translation

MacBook iPhone/iPad Browser

Try it now

Play audio in any language — we'll detect and translate live.

Live Lecture — Computer Science 101 Recording 12:34
Professor
Can anyone explain why we use recursion instead of iteration for tree traversal?
⚡ Quick Answer
Recursion naturally mirrors the tree structure — each recursive call handles a subtree, so the code stays clean and the call stack tracks our position for us.

Free. Private.
On every screen.

One app, three platforms. Every feature unlocked. Your data never used to train models.

Free

Every feature unlocked. No subscription. No paywall. No credit card.

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 — free through July 15, 2026. 20 hours of transcription per month, every feature unlocked, no subscription or credit card. Need more hours? Submit feedback in the app to earn +5 hours per message.

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.