iPhone & iPad
Diapasound
A precision binaural drone and tone instrument. Tune your frequency to 0.1 Hz precision. Build your sound. Let it play.
iPhone & iPad
A precision binaural drone and tone instrument. Tune your frequency to 0.1 Hz precision. Build your sound. Let it play.
Your brain doesn't fall asleep — it climbs down. Alpha while you read. Theta as you drift. Delta when you're gone. Save a sound for each rung, and Preset Cycling steps through them automatically with a smooth crossfade — no screen, no tapping, no interruption. When you reach the bottom, the session timer fades everything to silence, so nothing loops through the night.
Lights low, book open. A calm, alert tone while you wind down.
Lights off. The sound softens as you start to drift.
A slow, deep drone carries you the rest of the way.
fades to silence
Preset Cycling · smooth crossfades · session timer with fade-out · plays with the screen locked
Base frequency 25–1000 Hz. Beat frequency 0.1–60 Hz. Fine tune to 0.1 Hz precision.
Synthesised string roots or load your own audio file as a sustained loop.
Built-in rain synthesis or load your own ambient recording for a fully custom environment.
Rhythmic pulse layer — sine, square, sawtooth or triangle. Works without headphones.
Unlimited named presets. Export collections as shareable pack codes.
Auto-cycle saved slots with crossfades, then fade to silence on a timer — the engine behind the sleep ladder.