Open Babyphone releases
GitHub releases
Checking GitHub for the latest published build.
Local Android audio monitor
Turn two phones into your new babyphone.
One phone listens nearby. The other plays audio directly over your home Wi-Fi.
No account
No hosted relay
Open source
Android 11+
For Android 11 and newer
Install the latest release.
Download the APK from GitHub and review the release notes before installing.
Open Babyphone is not a medical or safety-certified device and does not replace responsible supervision.
One app. Two clear roles.
Choose the role for each phone. The child device captures audio, while the parent device plays the authenticated stream.
Read the setup guideChild Device
Place this phone near the child to send audio to paired parent devices.
Parent Device
Keep this phone with you to hear audio from the child device.
See what the parent phone hears.
The live waveform gives a calm, glanceable view of recent audio activity and helps distinguish fresh quiet frames from a stalled stream.
Quiet uses cyan. Loud sound uses blue. The status label always reinforces the color, and the waveform advances only while fresh audio arrives.
Local by design.
Open Babyphone keeps its supported connection model simple and inspectable.
- Network
- Audio travels directly between paired phones on the same Wi-Fi or trusted local network.
- Pairing
- Scanning the child QR code transfers the pairing credential; mutual authentication is required before encrypted audio starts.
- Infrastructure
- No project-operated account service, cloud storage, analytics, or internet relay.
- Source
- GPLv3 source code, protocol details, releases, and development history are public on GitHub.