YIRSUR is a smartwatch companion app that works with the YIRSUR smartwatch. It is designed for daily activity tracking and health monitoring. It is a companion app that works with the smartwatch to transfer all the data recorded to it and store it on the phone. It can display information such as steps, calories burned, and distance. It can also display the resting heart rate for 24 hours and the exercise heart rate for the period of exercise. It can also display incoming Caller IDs and messages.

This app is suitable for Android devices. It's very simple and easy to use.