Interval Timer is a user-friendly app that offers a simple and easy-to-use interface. The app's full-screen color coding makes it easy to glance at from afar, making it suitable for all kinds of activities, including boxing round timer, calisthenics circuit timer, circuit training, HIIT training, and Tabata. The app's features are loved by many, including the ability to save presets to quickly switch between different activities, use it in the background while using other apps or with your screen locked, and get additional audio, vibration, or silent notifications. <br/><br/>One of the most significant advantages of Interval Timer is its compatibility with music and headphones. This feature allows users to enjoy their favorite music while working out without worrying about missing a timer. The app's simple interface and compatibility with music make it an excellent choice for people who want to stay motivated during their workouts.<br/><br/>The app requires internet and network state permissions as it is ad-supported. This means that the app requires an internet connection to display ads. However, the ads are not intrusive and do not affect the app's functionality. Overall, Interval Timer is an excellent app for people who want a simple and easy-to-use timer for their workouts. <br/><br/>In conclusion, Interval Timer is a user-friendly app that offers a simple and easy-to-use interface. The app's full-screen color coding makes it easy to glance at from afar, making it suitable for all kinds of activities. The app's features, including the ability to save presets, use it in the background, and get additional notifications, make it an excellent choice for people who want to stay motivated during their workouts. The app requires internet and network state permissions as it is ad-supported, but the ads are not intrusive and do not affect the app's functionality.