StopTimer is a straightforward and efficient timer and stopwatch app developed by SynAppze. It is a free app that offers some advanced features and customization options. The app is compatible with Android 9.0 and works smoothly on most Android devices.

One of the most useful features of StopTimer is the ability to create multiple stopwatches and timers. You can set a title for each stopwatch and timer and customize beep/ringtone, number of beeps, and vibration settings per each timer interval. You can also define multiple intervals per timer and set unique time for each interval. All intervals run successively in order as they expire. The app is very easy on battery life and requires very little memory.

StopTimer is useful for various purposes such as timing yourself while driving long distance, exercising, cooking, laundry, and as an alarm clock. The app is also very robust and persistent. Even when the app is closed, the device is turned off or rebooted, timers and stopwatches will resume, and timers will alert correctly.

Overall, StopTimer is a versatile and user-friendly timer and stopwatch app that comes with some advanced features and customization options. If you are looking for an efficient and straightforward app to manage your time, StopTimer is definitely worth a try.