Ghost Prank

Unrelated icon? Don't mind that. That's just the app's camouflage.

Step 1: Set the timer (default 5 seconds)
Step 2: Pick your demon and scream
Step 3: Give your phone to your victim
Step 4: ???
Step 5: Profit

Remember to set your phone's volume to max for better effect.

Disclaimer: This is for fun only. I am not responsible for dropped phones and heart attacks. Please practice discretion when using the app. Version 1 was made in a day so please report bugs to help improve the app.