GymBrain
GymBrain combines a set counter with a recovery and workout timer - all with one tap.

Recover. Count.
Here’s how it works. Once you’ve completed your set tap “Start”. The recovery timer will begin and GymBrain will count your set.
When your recovery has completed, GymBrain will alert you using a tone, vibration or flash.
When you’ve finished your repetitions, tap “Zero” to start your next set of exercises.

Smart. Flexible.
By default, GymBrains recovery timer counts up, not down. So if your varying your recovery periods for different exercises you don’t need to mess about changing settings during your workout.
GymBrain is highly configurable though. Choose recovery duration, the type of alarm you want, countdown style and more.

Workout. Record.
When you start your first recovery, GymBrain will automatically start timing your entire workout.
When your done, GymBrain will keep a record of your workout (safely stored on iCloud).
Download via Apple App Store
DownloadCompatible with iPhone, iPod touch, and iPad. Requires iPhone OS 4.2 or later.