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A simple, free program to help with your interval training program. It is designed for running, but can be used with any activity.New in this version, create your own custom workouts and easily edit the template workouts to fit your needs!Listen to your own music while using the app, it reminds you when to switch intervals and which exertion level to switch to. Determine your own exertion level based on heart rate levels or perceived exertion.*** Users, we have had thousands of downloads. If you have any feedback on what you would like to see in this app let us know. Our team thrives on your feedback, share your feedback at firstname.lastname@example.org ***