A free app for Android, by Fapesoft.

If you are looking for a simple and easy-to-use app to count down or count up time, then you should download the Countdown Timer. It is one of the best and most useful apps in this category. With this app, you can easily create a countdown, count up, or count down timer.

You can also choose between different time units, such as days, hours, minutes, and seconds. You will receive notifications when the time expires.

This app can also work as a countup or a countdown timer. You will receive the notification at the end of the countdown, or you can set a personalized notification, both in the date and in the time.