You've slept through alarms before. This one doesn't let you.

Most alarm apps lose to your half-asleep self. Volume down — silent. Swipe — dismissed. You don't even remember doing it.

Loudest Alarm Clock Ever fights back.

When the alarm fires, the volume slams to maximum and stays there. Try to turn it down and it snaps back within a quarter of a second. Try to mute it — same. The Stop button stays locked for 60 seconds while you sit there listening to an air-raid siren or a literal scream. Because that's what it takes.

When the lock finally lifts, you still have to prove you're awake before it'll shut up. Pick how:

• Math — solve three arithmetic problems. (47 × 8 at 6 AM is genuinely waking.)
• Shake — vigorously shake the phone for 5 straight seconds.
• Type phrase — type "I am awake and ready" exactly. Autocomplete won't save you.

Or pick "just tap Stop" if you want to be reasonable. We won't judge.

— FREE TIER —
• Up to 3 alarms
• 60-second volume lock (the headline feature, never paywalled)
• Bundled air-raid siren, police siren, klaxon, and scream sounds
• Math and Shake dismiss challenges
• Snooze, repeat days, custom labels
• Reschedules itself automatically after a phone reboot

— LOUDEST ALARM PRO (£2.99, ONE-TIME) —
• Unlimited alarms
• Custom lock duration (30s, 60s, 2 min, or 5 min)
• Import any audio file as your alarm sound
• Type-phrase dismiss challenge
• Three extra themes: Midnight, Sunrise, Forest
• Weekly stats — snooze count, average wake time, longest no-snooze streak, dismiss-method breakdown

— PRIVACY-FIRST —
Zero analytics. Zero tracking. Zero ads. Zero data collection of any kind. The app makes no network requests except Google Play Billing for the optional Pro purchase. Your alarms, imported sounds, and stats live only on your phone. Uninstall the app and they're gone. There's no server. There's no account.

— ONE-TIME, NOT A SUBSCRIPTION —
Pay £2.99 once. Pro is yours forever, on any device signed into the same Google account. Restore in the app, or just reinstall and it'll auto-restore.

— BUILT FOR HEAVY SLEEPERS —
Plays on the alarm audio stream so it bypasses ringer mute and most Do Not Disturb modes. Uses Android's setAlarmClock API for guaranteed firing in Doze. Survives phone reboots — your alarms come back automatically. Vibrate pattern fires alongside the audio for double impact.

If you've ever woken up to the horror of realising you dismissed an alarm in your sleep — this is the app you've been looking for.

Set one tonight. Tomorrow morning, you'll see what we mean.