The WITHit app enhances the experience of using WITHit smartwatches by providing a comprehensive suite of features tailored for health and fitness enthusiasts. Users can easily set up their smartwatches and access functionalities such as heart rate monitoring, sleep tracking, and women's reproductive health tracking. The app also allows for message notifications and the ability to make and receive calls directly from the smartwatch, ensuring users stay connected while managing their health.

In addition to health monitoring, the WITHit app includes various sports modes and music control, making it a versatile tool for active lifestyles. It is compatible with iOS 9.0 and above, offering a user-friendly interface for iPhone users. However, it is important to note that all health data provided by the app is intended for general fitness and wellness purposes and is not suitable for medical use.