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A simple HIIT app specifically engineered for Apple Watch. It also provides a simple HIIT timer for iPhone/iPad.With easy setup, clean display, live heart rate, haptic feedback, workout summary and completely independent Apple Watch app experience, your interval workouts will undoubtedly be fun.The workout also adds up to the move and exercise rings on Apple Watch.Features:• Super easy setupDigital crown makes setting intervals a breeze. The app remembers your previous settings.• Clean displayLarge fonts, vivid colors, live heart rate• Workout summaryCalories burned, average and max heart rate, total time• Health app integrationWorkouts are saved to the Health app• Audio alerts and haptic feedbackSubtle haptic feedback guiding you through the intervals. You can also set audio beep alerts if you want.• Runs in backgroundA completely independent Apple Watch app experience• ComplicationsThey show the time left for the workout. Also, they are a quick way to launch the app.• More settings+ Warm up interval+ Cooldown interval+ Last rest interval+ Halfway alert+ 8 sec warning during rest+ Interval change warning (when 5 seconds are remaining)• ExtraA simple HIIT timer for iPhone/iPad* Note: Though this app is primarily designed for Apple Watch, it also provides a simple iPhone/iPad HIIT timer.