Use APKPure App
Get Countdown Timer and Stopwatch old version APK for Android
Đồng hồ bấm giờ và hẹn giờ đơn giản
A simple countdown timer and stopwatch, to use it as a stopwatch set the timer to 00:00:00 (default) and press start. To use it as a count down set the timer to anything other then 00:00:00 and press start. Note this app does not use permissions and is not designed to be run in the background.