stir
sleep soundly, wake up ready to live. one overnight session — white noise into silence, then a gentle wake when your body is ready.
sleep soundly, wake up ready to live. one overnight session — white noise into silence, then a gentle wake when your body is ready.
set when you need to be up by, and start the night. white noise carries you to sleep and fades to silence before morning — white, pink or brown noise, a fan, wind, or ocean waves, looping seamlessly all night.
then stir listens, calibrated to your room, so distant traffic never wakes you but the rustle of you naturally stirring does. it wakes you gently inside your wake window. miss the window, and the alarm sounds at your "up by" time no matter what.
the night screen shows nothing that tells the time — no clock, no countdown, not even the status bar. waking at 3am and working out how little is left is its own kind of insomnia, and there is nothing on screen to do that arithmetic with.
what's left is a black sky, and the real sun and moon riding their daily rings at their true positions, computed on-device. subtle and artistic if you ignore them; honest astronomy if you read them. when the moon touches the horizon line on screen, it's rising or setting outside your window.
for years i paid a subscription to a sleep app for exactly one feature: it listened for me stirring and woke me gently. it had watch integration too, but i don't wear a watch to bed — so i was renting a single feature, year after year. when i realized i could build that feature myself, i was honestly amazed that it worked — and it works 99% as well as the thing i was paying for.
the deeper reason is more personal. seeing the time at night stresses me out. wake at 2 am and the clock says you're in the middle of the night; wake at 5 and it says you didn't sleep long enough; wake at 6:40 and it says it's almost over. none of that information helps — it just costs you the rest of the night. so the night screen shows nothing that tells the time. a black sky, and the one thing worth looking at instead: the real moon, right where it is outside your window.
that's why it's open source, too. building this cost almost nothing but judgment — and when software is that cheap to make, simple useful tools shouldn't live behind subscriptions and data harvesting. it's a Pure Inference build; take it, learn from it, fork it.
what we collect: nothing. stir does not collect, store, or transmit any personal data. no accounts, no analytics, no tracking, no advertising, no servers.
microphone. the microphone is used solely to detect the sounds of you stirring, and only evaluated during your wake window. audio is processed on your device in real time — nothing is ever recorded, stored, or sent anywhere. in no-alarm mode the microphone is never activated at all.
location. your approximate location is used only to place the real sun and moon on the night screen. it is computed against on-device astronomy and never leaves your phone. decline it and the app works the same, minus the sky.
storage. your settings live locally on your device. nothing leaves your phone.
contact. for support or questions, open an issue on GitHub.
last updated july 2026.
