Random Sound Timer

Rodo Apps

Contains ads

About this app

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.

What’s new

Material You theming is now disabled by default instead of enabled. You can toggle it in the settings at any time.