Interval Timer - HIIT Builder is a lifestyle application designed to assist users in managing their High Intensity Interval Training (HIIT) sessions effectively. With the ability to customize interval workouts and access various templates like ladder and pyramid setups, users can personalize their training routines. The app stores all workout data locally without requiring users to create an account or endure advertisements.

By enabling HealthKit integration, users can effortlessly track and review workout data in Apple's Health or Fitness apps. The Apple Watch compatibility allows users to monitor heart rate and calories burned during workouts. Sharing interval workouts with others through email and AirDrop is also supported.

HIIT Builder caters to a diverse range of HIIT workouts, including Tabata routines, offering customization options for interval lengths and exercise sequences. The app's user-friendly interface, featuring large fonts and contrasting colors, enhances visibility during workouts. Users can tailor alerts for interval transitions, exercise completion, and screen flashes based on their preferences.

With the flexibility to create and personalize an unlimited number of interval workouts, HIIT Builder empowers users to take control of their fitness journey. Seamless synchronization between devices via iCloud ensures workout consistency across multiple platforms. Interested users can experience a free trial of all features for two days upon downloading the app.