FlexTime is a productivity timer, an app that helps you to pace your work and get things through disciplined time management.
It can time simple events like your break between one task and the next or measure more complicated routines and sequences.
In fact, it can do any job that requires measurement of time intervals. Among the routines that come pre-packaged with the app are one to simulate a metronome and another that keeps the appropriate time through a extensive sequence of yoga exercises. The developer Daniel Jalkut (of Red Sweater Blog 
fame) suggests further uses:
Schedule regular breaks. Practice yoga, tai chi, or dance. Combat attention disorders. Improve your rhythm. Follow a recipe. Meditate. Remember the laundry! About the only thing FlexTime can’t help you do is list the possibilities.
The interface is simple but allows you to build routines quickly:
Here one of the pre-packaged routines, Merlin Mann’s (10+2)*5 productivity hack , is loaded. It will cycle through an hour’s worth of ten minute focussed work periods and two minute breaks for mucking around.
As it comes to the start of each event, it presents an alert (or plays a sound or speaks, your choice):
You can keep it on the screen to remind you what you are supposed to be doing or dismiss it and get on with it until the next alert, depending on what works best for you.
FlexTime is shareware (USD 18.95) and is available from Daniel’s web site .
