Pomodoro is a productivity tool that helps you focus intensely on a task for a period of time.
You set the length of time you want to maintain the focus, and you set how often you want to be reminded of the time remaining.
Pomodoro starts out by assuming a) that you want to keep focus for 20 minutes, and b) that you want to be told every 5 minutes how long you have remaining.
But you can change those numbers, either by moving the slider for the duration (1-60 minutes) and the interval (1-5 minutes), or by entering the numbers in the duration and interval text boxes.
The reminders are spoken, and also appear in as text in the app. You can switch the voice off, if you want.
Enjoy!