A modern Android binaural beat generator, reviving a ~15-year-old project built on SBaGen (Sequenced Binaural Beat Generator by Jim Peters, GPLv2).

The original was a native Android port of SBaGen via OpenSL ES on an ancient NDK. This 2026 rebuild uses a modern stack — Kotlin, Jetpack Compose, AGP — with a clean frontend and the audio logic linked in, plus a GitLab CI pipeline that produces a downloadable APK.

Features

• Multiple audio engines: a simple built-in generator plus the classic SBaGen
• 58 bundled SBaGen .sbg presets, selectable in-app
• Independent background layer: pink/brown noise generators and looping nature samples (river, train), with its own volume control
• Jetpack Compose UI
• GitLab CI builds a downloadable APK
• Runs on modern Android devices

Build

./gradlew assembleDebug

Or grab the APK artifact from the GitLab CI pipeline.

Credits

Builds on SBaGen by Jim Peters (GPLv2). Bundled audio samples are freely licensed (river: CC BY-SA 1.0, Jim Peters; train: CC BY-SA 3.0, Frank Schulte). See CREDITS.md for full details.

License

See LICENSE. SBaGen is GPLv2; this project inherits compatible licensing.