School Bell Simulator is a free Android app developed by Progimax that allows users to simulate the sound of a school bell. The app is perfect for pranks, whether you want to finish class early or play a joke on a friend. The app's realistic sound imitates a school bell perfectly.

The app is easy to use and has two main functions: setting a timer or triggering the bell immediately. In addition, users can customize the background color and LED lights. With just a press of a button, users can start the timer or trigger the buzzer to play the realistic sound of a school bell.