ZeroSnooze is built for heavy sleepers. There is no snooze button — the only way out is to prove you're awake.
Download on the App Store Requires iOS 26 or later.It sounds even when your phone is silenced or in Focus. No missed alarm because you flipped the switch last night.
Dismissing requires solving a challenge, so you can't silence it half-asleep and drift back off. By the time it stops, you're actually up.
Pick a built-in tone, record your own, or import a track. Whatever gets you moving.
Pick how you have to prove you're awake — each alarm can use a different one.
Answer a run of math problems before it stops. Set the difficulty and how many.
Register a barcode in another room — you have to get up and scan it to stop the alarm.
Shake your phone until you've hit the count you set. No going back to sleep mid-shake.
Get out of bed and walk a set number of steps. By the time you're done, you're up.