An alarm app for heavy sleepers that makes you get out of bed

Most alarm apps for heavy sleepers compete on volume. That solves the wrong problem. Heavy sleepers usually hear the alarm fine. The failure happens in the seconds after: a hand finds the phone, a thumb finds the button, and the brain never fully joins the transaction. Sleep researchers call the groggy state after waking sleep inertia, and while it lasts you can dismiss an alarm without forming any memory of doing it.

BarLock removes that half-asleep exit. The stop button is a barcode or QR code in another part of your home, so dismissal requires standing up, walking, and pointing a camera at a specific object. Each step demands more coordination than a tap, and by the end of them you are usually awake enough to stay that way.

The supporting controls exist because heavy sleepers are resourceful. A lock window stops you from softening the alarm the night before a hard morning. Re-ring brings the alarm back if you force-stop it without scanning. The wake check follows up a few minutes later, for the mornings when the walk back to bed is the real threat.