Lull

Sound that switches you off

Fifteen sleep sounds, generated live on your iPhone — every raindrop, wave and crackle is made as it plays, so nothing ever loops and there's nothing to download. Blend them, set a timer that fades out, and drift off.

One email when Lull launches. Nothing else, no list, no spam.

🌙 You're on the list — we'll email you once.

Loops have a seam. Your brain finds it.

Every rain recording repeats, and some night your half-asleep brain notices — that's the moment you're awake again. Lull doesn't play recordings. It synthesises the sound as it plays, so a mix can run all night and never repeat itself. That's the whole idea.

Lull sounds screen with a mix playing Lull sound tiles grid Lull sleep timer with fade Lull ready-made soundscapes Lull sleep progress and streak
Fifteen sounds, all synthesised.Rain, thunder, ocean, fireplace, fan, café — plus true white, pink and brown noise. Generated live, never downloaded.
Mix in the dark.Tap a tile to add a sound, drag up or down to set how loud it sits. The tile fills as you go — no sliders to hunt for.
A timer that fades, not cuts.Five minutes to two hours, ending in a slow fade-out. Sample-accurate, and it keeps running with the screen off.
Private by design.No account, no analytics, no network requests at all. Your nights, your streak and your mixes stay on your iPhone.