SleepDrift
SleepDrift is a sleep-sound player for iPhone and iPad that generates steady White, Pink, Brown or Grey noise on-device to mask distractions at night. Free to download with a 7-day trial (one hour per session), then a single $3.99 purchase. No subscription, no ads, no account.
Fall asleep to steady noise. Nothing else.
SleepDrift is for the light sleeper who already uses noise at night — a bedside sound machine, a speaker while travelling, a fan that is not there. It generates four steady sounds on your iOS device: White, Pink, Brown and Grey. Pick one, set the level, optionally set an end, lock the phone. There are no mixes to build, no playlists to manage, and no sleep tracking watching you back.
Made for bedtime, not for fiddling
The app opens directly on the Player. Four colours, one volume, an optional Deepen pulse on Pink, a duration stop, a clock stop, and Play. Settings and About live behind one gear button and return you to exactly where you were. Bluetooth, headphone, lock-screen and Control Center buttons play and pause with the same meaning as the on-screen control, so the speaker controls work without reaching for the phone.
Stops when you ask it to — visibly
Two independent stops, both always on screen while they run: a duration of OFF, 15, 30, 45, 60, 90 or 120 minutes, and a one-shot clock time such as 6:30 AM for next strictly future occurrence. The Player shows the live remaining time, the effective end, and which stop wins. Nothing extends a stop silently — not a purchase, not a relaunch, not an interruption.
Free to try. Bought once, owned.
SleepDrift is a free App Store download with a 7-day trial: each sound session runs up to one hour. Continuous all-night playback is a single one-time $3.99 purchase — no subscription, no ads, no account. After the trial, your settings and stops stay editable; starting sound beyond the hourly sessions asks for the unlock. Settings you change are never held hostage.
Private by design
SleepDrift generates its sound on your iOS device and stores your preferences there. It has no account, no analytics, no advertising SDK, and no server of ours. Sound leaves the device only as audio from the speaker or headphones. The one exception is a diagnostic report you explicitly choose to share when asking for help — versions and event counts, never your settings or anything personal.
What SleepDrift is not
SleepDrift is not a sleep tracker — it records nothing about your night and claims nothing about sleep stages. It is not a mixer: four generated colours, no samples, no layered soundscapes. It will not join calls, play alongside other audio, or change your system volume. What it does is one job: steady, predictable noise, all night, from your phone.
Everything in writing
The full reference covers each screen, every setting, the formats it works with, and the cases where a feature refuses to run. It is one page, and it is the same text the app's own help screens point at.