This free iOS app is centered around the idea of a work cycle, which suggests that you work on a task, uninterrupted, for 30 minutes and then take a 30-minute break from it to achieve the best results. If you need to keep track of your time purely for motivational and productivity reasons, consider 30/30.
30/30 features an attractive colorful interface, which makes it easy to see how much time you have left to devote to your task.
