No. The microphone measures your surroundings for a few seconds: four seconds when you press Play, then five seconds a minute while Adapt is on. Each measurement is reduced to eight numbers, one for each frequency band from 63 Hz to 8 kHz. The audio is discarded at once. The eight numbers describe how loud the surroundings are. They do not contain speech, and no audio can be rebuilt from them. The app keeps the last eight numbers on the phone, so that the next Play can start with them. Nothing is sent anywhere.

That is Adapt. It listens for about five seconds each minute and reshapes the sound to cover what it hears. When the surroundings get louder, for example when snoring starts, the sound rises. When the surroundings become quiet, the sound falls again. It moves only within the limits set in Settings: "Can rise" sets how far it can go above your level, 3, 6 or 9 dB. The morning line and the Coverage sheet show each move.

Please write to [email protected] and include five things: your iOS version, your iPhone model, whether Adapt was on, whether you used headphones or the speaker, and the text of the morning line on the home screen (for example "Played 7h 55m"). The morning line is correct even after the app stopped unexpectedly, so it shows when the sound stopped. Add the line from Settings › About as well.

Blanket runs on iPhone with iOS 17 or later. There is no iPad version, and no Apple Watch or Mac version.

Send an email to [email protected]. Include the line from Settings › About (for example "v1.0 · build 36 · a1b2c3d"), your iPhone model and your iOS version. Describe what you expected and what happened instead. A screenshot helps.

To measure how loud your surroundings are in eight frequency bands. With that measurement the sound can be shaped to cover them at the lowest volume that works. The measurement takes four seconds when you press Play, then five seconds a minute while "Adapt to surroundings" is on. The audio is reduced to eight numbers and discarded. With Adapt off, the microphone is never opened.

After Play, the app makes two checks about a minute apart and waits until they agree before it reports. In quiet surroundings this takes about two minutes. If it never changes, the microphone may be covered, for example by a pillow or a case. Or microphone access may have been denied in Settings › Privacy & Security › Microphone.

That is deliberate on the phone's speaker: the microphone sits next to the speaker, so the surroundings are measured while the sound is still low. In earbuds the sound starts at once. Settings › Playback › Start offers "Quiet" instead, which keeps silence for the four seconds of measurement.

Adapt raised the level because the surroundings got louder, for example when snoring started. It rises at most by the "Can rise" amount set in Settings: 3, 6, or 9 dB above your level. It falls again when the surroundings are quiet. The morning line and the Coverage sheet show when it moved and by how much.

"Play with other apps" is on. In that mode iOS treats Blanket as a secondary sound under your audiobook or podcast and shows no card for it. Turn the switch off in Settings to get the card back.

iOS pauses audio when the output device disappears, so that the sound does not suddenly play from the speaker. Press Play on the Lock Screen, or put the earbud back in, to continue.

Say "Hey Siri, start Blanket". Or add the Home Screen widget. Or, in the Shortcuts app, create an automation: when Sleep Focus turns on, run "Start Blanket".

Yes. The app treats a Bluetooth speaker like the phone's own speaker. The sound starts low and rises while the surroundings are measured, and the phone's built-in microphone does the measuring.