Something not working, or an idea for what it should do next? Write to support (at) sleepdrift.app and a person will answer.
When you write in, it helps to include:
your iPhone model, your iOS version, and — if a sound came out wrong — the exact words you typed.
Open the Create tab, type what you want to hear, and tap go. Describe the place and the material, not just the thing: “rain on a canvas tent” beats “rain”, and “box fan in a big empty room” beats “fan”. The first sound of a session takes a moment longer while the engine warms up.
Try rewording rather than repeating. The generator responds to texture and setting, so adding a surface (“on a tin roof”, “through pine trees”) or a distance (“distant”, “close”) usually changes it more than adding adjectives. Every sound also has more than one take — replay it to drift between them.
Check the phone is not in silent mode, and that the volume slider in the app is up — it follows the system volume. Playback continues with the screen off by design; if it stops, make sure Low Power Mode is off and that another app has not taken over audio.
Sleep tab → set a timer. It fades out slowly rather than cutting off. If you also set a gentle wake time, your morning sound rises from a whisper over about two minutes.
Guidance for infant sleep puts all-night sound under roughly 50 dB, with the speaker across the room rather than beside the cot. Sleep Drift does not try to measure that — a phone cannot do it reliably, and a wrong number about a baby’s hearing is worse than no number. The practical test: if you have to raise your voice over it, it is too loud.
That is the preview. Until the app is unlocked, anything in your library — the twelve built-in sounds included — plays five minutes at a time, fading out rather than cutting off, and you can start it again as often as you like. Unlocking removes the limit: subscribe — with the first week free if you have not used the trial before — or buy it once and keep it. Your first sound is free to make, and nothing you have made is ever taken away.
Tap “restore purchase” on the paywall or in Settings → Purchase, with the same Apple Account you bought with. Nothing you have made is ever deleted: your library stays playable whether you have paid or not.
Subscriptions are managed by Apple: apps.apple.com/account/subscriptions. The free first week is Apple's introductory offer, applied by the App Store the first time you subscribe. An Apple Account that has already used it does not get another, and the app will not offer one — so if you have subscribed before, expect to be charged from the start. While a trial is running, cancelling more than a day before it ends means you are not charged. If you cancel later, nothing you made is deleted: your library goes back to playing five minutes at a time, the same as before you subscribed, and unlocking again removes the limit.
There is nothing held anywhere but your device, so deleting the app deletes everything. See the privacy policy.