Real-time 48 kHz audio synthesis, five brainwave presets, zero setup. Just put on stereo headphones and press play. The three-minute browser trial is unlimited after you install the mobile app.
The mobile app adds 23 expert-tuned presets, 5 ambient sound beds, progressive wake-up alarms, offline synthesis, and unlimited session length. Free. Not sure which to use? Read the full web vs mobile app comparison — it covers the four-preset trial here against the forty-preset app library, feature by feature.
127 peer-reviewed studies on binaural beats and brainwave entrainment.
Professional 48 kHz audio generation — not pre-recorded MP3 loops.
No signup. No data collection. No tracking. Your privacy stays yours.
The full app runs with zero internet after download. Airplane-ready.