Blanket: Adaptive White Noise

Blanket is a masking instrument for sleep. It does not play recordings. It makes its sound on the phone, in real time. It shapes that sound to cover the noise around you, at the lowest volume that works. HOW IT WORKS Press Play. For four seconds the microphone measures your surroundings: a snoring partner, a street, a neighbour's television, a dripping tap, a whine. It reduces what it hears to eight numbers, one for each octave band. Nothing is recorded. The sound is then shaped so that it sits just above the noise in every band, and no louder. The main screen shows the result: a blanket of sound laid over the shape of your surroundings, and one word: Covering. ADAPT THROUGH THE NIGHT Leave Adapt on and the app keeps measuring: five seconds a minute while the night is quiet, longer only while it checks a change. When the snoring starts an hour after you fall asleep, the sound rises to meet it, up to the limit you set. When the surroundings become quiet, the sound falls again. Turn Adapt off and the microphone is never opened. ONE SOUND There is no list of sounds to choose from. The sound is made for your surroundings, in every band, each time you press Play. With Adapt off, a tone dial in Settings runs from Rumble to Hiss, with Waterfall between them; brown, pink and white noise are three positions on it. MADE FOR THE MIDDLE OF THE NIGHT • Every start fades in gently, also after a phone call. • The Lock Screen always keeps a Play button. • A Home Screen widget, Siri, Shortcuts and the Action button start and stop it. An automation can start Blanket when Sleep Focus turns on. • Play with other apps: mix the sound under an audiobook or a podcast. • In the morning, one line: "Played 7h 55m". It is correct even after the app stopped unexpectedly. WHAT IT DOES NOT DO No ads. No account. No subscription. No tracking. No sound library to download, no sleep stories, no tracking of your sleep. The microphone is a measuring instrument. It listens for a few seconds, keeps eight numbers, and discards the rest. The only thing the app can send is a daily count of what is used, and only if you turn that on. Requires iOS 17 or later.