Lull
Sleep. Baby.
Calm. Focus.
White noise, nature sounds, and ambient mixes that actually play all night.
Most sleep apps fail the moment you need them most. Ads blare, audio cuts out, subscriptions pile up.
Lull plays all night without stopping. No ads. No subscription. Just sound, the way it should be.
- No ads
- No subscription
- Never stops playing
- Works offline
- No account needed
One app. Four use cases.
Pick what you need. Lull handles the rest.
Sleep
32 sounds and 9 ready-made mixes for deep sleep.
32 sounds · 9 mixes
Baby
Heartbeat, womb sounds, shushing, and gentle mixes that work at 3am.
12 sounds · 4 mixes
Calm
41 sounds for winding down, breathing exercises, and taking the edge off.
41 sounds · 4 mixes
Focus
24 sounds for deep work. Brown noise, pink noise, and more.
24 sounds · 7 mixes
Mix your perfect sound.
Layer up to 6 sounds simultaneously with individual volume sliders. Brown noise at 70%, gentle rain at 40%, fan in the background. Build it, save it, resume it every night with one tap.
- Up to 6 sounds layered at once
- Individual volume per sound
- Save custom mixes
- Resume last session instantly
Plays all night. Without stopping.
Proper background audio means Lull keeps playing when you lock your screen, switch apps, or take a call. No random cutoffs. No 20-minute timeouts. No silence at 3am.
Set a sleep timer and Lull fades out gently when you're ready, so you never jolt awake from sudden silence.
Soothe your baby. Stay in your zone.
Heartbeat, womb sounds, shushing. The Baby category has sounds that actually work at 3am when nothing else does. And when it's your turn to focus, switch to brown noise and get to work.
Lock screen controls mean you never have to unlock your phone with a sleeping baby in your arms.
Why not just use another app?
There are dozens of sleep sound apps. Most are ruined by the same problems. Lull was built specifically to fix them.
Ads that blare at midnight. Audio that cuts out after 20 minutes. Subscription paywalls. $70/year just to hear rain.
No ads. No subscription. One small purchase. Sounds that play all night, every night, on your own device.
Everything you need. Nothing you don't.
Set it up once. Forget about it.
Sleep timer
Set any duration. Lull fades out gently so you never jolt awake. Configurable fade length.
Lock screen controls
Play, pause, and switch sounds from the lock screen. No need to unlock your phone.
Headphone-aware
Optionally pauses when headphones disconnect, so midnight earbud drops don't wake a sleeping baby.
Fully offline
All sounds are bundled on-device. No internet, no streaming, no latency. Works anywhere.
Bedtime reminder
A gentle nudge when it's time to wind down. Let your routine run itself.
Generated noise
White, pink, brown, green, and blue noise are generated in real time. No loops, no seams.
$5.99. Once. Forever.
Unlock Lull Premium with a single, small payment. No renewal. No subscription tier. No "your free trial has ended" notification at midnight. Every sound, every mix, yours forever.
Noise sounds (white, pink, brown, green, blue) are always free. Premium unlocks the full nature, urban, baby, and weather sound libraries.
Your data stays yours.
No accounts. No analytics. No tracking. No server. All your settings and mixes are stored locally on your device and go nowhere. Lull works completely offline, by design.
Read the privacy policySleep well tonight.
One-time purchase. No subscription. Yours forever.