Loopbox - Black Box Recorder

Cathode Labs

About this app

You never know when you'll need a recording.

By the time you pull out your phone, open a recorder app, and hit the button, the moment is already gone. The thing you needed to capture happened 30 seconds ago and you missed it.

Loopbox runs a continuous audio buffer in the background — always recording, always ready. Nothing is saved until you decide it matters. Tap save, and the last few minutes of audio are written to a WAV file on your device. Don't save, and the buffer rolls on. Old audio is overwritten as new audio comes in.

It works like the black box in an aircraft. It's not recording because something is happening. It's recording because something might.

Key features:
- Always recording — Runs in the background, keeping the last 15 minutes to 3 hours of audio
- Save what counts — One tap captures the last few minutes to a file. Nothing is stored unless you decide it's worth keeping.
- Can't stop by accident — Stopping takes a deliberate long press, so a stray tap never costs you your audio
- Share-ready — Recordings save as WAV. Share from the app to anywhere.
- Built-in playback — Listen back without leaving Loopbox
- Your window, your choice — 15 min, 30 min, 1 hour, or 3 hours
- Stays on your phone — No cloud, no account, no tracking

Who it's for:
- Journalists and interviewers who can't predict when the moment will happen
- Anyone who needs a reliable record of what was said
- Security professionals documenting encounters
- People in situations where accountability counts