Random Sound Timer

Random Sound Timer: the ultimate prank app for hidden sound pranks. Pick a sound, set a timer, and hide your phone. It fires off surprise noises on a schedule while the screen looks completely off. The perfect practical joke app for messing with friends, roommates, or coworkers. How it works: Choose a sound: use a bundled sound effect or import your own audio file Set the interval: from seconds to minutes between each random sound Hit Start, then go stealth: a full black overlay disguises the screen as off or locked Long-press to reveal the hidden timer whenever you need to check on it or stop it Keep them guessing: Turn on Interval Variation and each countdown randomly runs shorter or longer than the time you set, so the prank sound never fires on a predictable beat. Build your own sound library: Import any audio file from your device and build a personal sound effects collection. Sort by name or date, multi-select and delete in bulk, and preview any sound before you commit. Stay hidden: Fullscreen stealth mode with a black overlay that only unlocks on long-press Optional screen pinning locks the app in place so a stray swipe can't blow your cover Volume control up to 200% so the sound cuts through, even in a noisy room Made to fit you: Supports Material You dynamic theming on Android 12+, matching the app to your device's wallpaper-based color palette. Random Sound Timer is a harmless prank and joke app built for fun: hide a random beep in a friend's backpack, set off a mystery noise during a meeting, or just mess with your roommate. For entertainment purposes only. Use responsibly.