The Simple HIIT Interval Timer is an Android application designed to help users manage their workouts by providing a customizable timer. The app is useful for all forms of High-Intensity Interval Training (HIIT), including weight training, circuit training, running, cycling, and boxing/MMA. Upon opening the app, users can choose to start a simple Tabata session or jump into a previously created workout. The app comes with pre-loaded presets that help users quickly start their workouts. Users can also customize their workouts by adjusting the prep, work, rest, round, and cooldown settings.

The app has a simple and effective user interface, and users can adjust the sound and vibration settings from the settings menu. The app saves the previous workout to be used on start-up, and users can save and edit their workouts. The app runs in the background, and it has a 5-second countdown. The app uses internet and network state permissions to display advertisements. HIIT has several benefits, including a drop in body fat, increased fat loss, and decreased fat enzymes.

Overall, the Simple HIIT Interval Timer is a useful application for individuals who want to manage their workouts effectively. The app is free to use and provides a simple and customizable timer for all forms of HIIT.