You don't even need the keyboard! Easy to use, do not focus on time. Keep it to the SkyTimer.
* Use the pointer or press on anchor (5,15,30,45,1h) and choose the time you want to measure.
* Choose the sound to notify you about time is over.
* Pointer will track the time. You can check the time left on extension or the icon on extension.
* When the time will over - you will be notified with chosen sound.
... may the time be with you.
1.82 - Background time countdown fixed.