Interval Sets is a simple, easy to use application for your iPhone and iPod Touch, allowing you to set-up collections of timers for when you want to work-out or anything that needs pre-defined timers.

So if you are off to the gym to have a run on the treadmill simply add a new Interval Set, maybe name it ‘Treadmill Workout’, then add an interval named ‘Run Fast’ set to 30 seconds and another named ‘Run Slow’ set to 30 seconds. You might want to do this 5 times (rather you than me) so you set it to 5 repetitions.

When you are ready to go start up some motivational music, select the Interval Sets application, pick the set and press start....

Interval Sets uses a simple layout so you know what interval you are on, how long you have left and which repetition you are on, so when you are getting close to the end and your vision is all fuzzy you can still see what’s going on.