Buzzer - Stopwatch - Timer The buzzer is a three-in-one app, with a buzzer, stopwatch, and timer facility. Buzzer >> Buzzer is an app that lets you play buzzer during quiz shows or other such events. Here the user has nine different buzzer sound available to choose from. Stopwatch >> Start the stopwatch app, create lap and find the time difference between two different laps. Timer >> Set timer by selecting seconds, minutes, an hour. Provide input as 400 seconds and the app will automati