Poke Timer

The app displays an overlay that can be customized in the settings menu. The overlay contains up to 5 timers and can be moved or even minimized to suit your needs so that it does not ever interfere with your normal activities.

Click on a timer to start the count down, you can reset a started timer by clicking on it again.
Once the counter ends, you will be notified, even with your screen turn off, by:
--- Vibration;
--- Alarm sound;
--- Notification;
or any combination of the above notification methods according to your preference in the settings menu.