IntervalTrainer в Android Market

IntervalTrainer (v. 1.1) Разработано RockyMountainComputing

IntervalTrainer can help you get in shape by allowing you to create your own custom workouts based on timed intervals. Interval workouts are great for increasing your cardio activity, no matter what you're doing by keeping you focused and alerting you when it is time for the next workout. Syncs with your playlists too.