A free program for Android, by HMT Enterprise Limited.

Pomodoro is an innovative approach to increasing productivity, which consists of the separation of a working period from a break period, which is used to refresh the mind. The individual is then guided through a sequence of short, highly productive tasks that stimulate the mind and increase productivity. 

This is possible because the user is forced to focus only on the work and is then able to complete the task in the shortest possible time. It is important to emphasize that the user does not have to work all the time, but can take a break when he needs to, which is also a part of the Pomodoro technique.

If you want to try this productivity technique for yourself, then this timer app is for you.