The Java language libraries include a "swing timer," which lets you add a countdown timer on your Java forms. You set up the timer's properties such as the amount of time that passes before a function ...

Android alarm app that uses Android Sleep APK to start a countdown timer service when the sleep confidence level is great than 95.

Brain Booster app is a quiz app with timer , score count, right , wrong and quiz completion sound on clicking respective option and random multiplication in the given range provided by user.