Real-time 48 kHz audio synthesis. Twenty-three expert-built presets. A progressive wake-up alarm that eases you from delta to gamma in six phases. Sixteen languages. Runs entirely offline. Already using the browser version? See the web vs app feature breakdown for what changes when you upgrade.
Every frequency is generated on-device at professional 48 kHz sample rate. Change the beat by 0.1 Hz and the output changes instantly — there is no library of static MP3s to scroll through. Pure, precise, stereo-isolated.
No account, no cloud, no telemetry, no data collection. Works on airplanes, in cabins, in rural dead zones. Session history stays on your device.
Delta → Theta → Alpha → Beta → Gamma in six phases. 15-minute fade-in with vibration and light cues.
Sleep, deep work, anxiety relief, lucid dreaming, migraine, pre-workout focus, post-workout recovery, long-haul flight reset. Each tuned by target outcome.
Base carrier 20–2000 Hz, beat 0.5–40 Hz, ambient mix, ramp envelope. Save unlimited.
High-quality loopable ambient sounds that mix underneath the binaural carriers. Calibrated in volume so the beats remain entrainment-effective even with the bed dialed up.
Full localization including RTL.
Every session logged with timestamp, frequency, duration, and subjective note. Weekly trend charts to see what is actually working.
Light, dark, auto themes. Real-time waveform visualization that never becomes flashing.
The one sleep app I actually kept past the trial. It does one thing, at a depth nothing else touches.— App Store review · May 2026
I have tried every binaural app on the store. This is the only one that actually generates the beats in real-time at a sample rate that doesn't sound like a pager.
The progressive alarm changed my mornings. Six phases from delta to gamma, fifteen minute fade, and I wake up like a normal human instead of a cortisol emergency.
Runs offline on long flights. Zero ads if you don't want them. Presets are actually tuned by someone who reads papers. Ten dollars would be fair, and it is free.
Open the App Store or Play Store on the device you'll actually listen on. Put on stereo headphones. Pick a preset. That's the entire onboarding.