An Interval Timer for a workout app is a feature that allows users to set up timed intervals for their exercise routines. The app can be programmed to set a particular duration for each exercise interval, followed by a rest interval before the next exercise starts. The user can customize the intervals according to their specific needs, such as the number of intervals, the duration of the exercise, the rest interval duration, and the type of exercise. This feature can also include pre-set workout routines for users who prefer a ready-made exercise plan. During the workout, the app displays the current exercise and the remaining time for the exercise interval. It can also provide audio and visual cues when it's time to switch exercises or rest, making it easy for users to focus on their workout without having to constantly check the timer. Overall, an interval timer for a workout app can be a helpful tool for users to structure their workouts, stay on track, and achieve their fitness goals.