A free program for Android, by caixiaoqing.

The Keep Health app is the perfect choice for those who want to stay connected and monitor their health. It helps you to easily keep track of your health and fitness goals. The app is compatible with GTS4-C619 smartwatches. 

You can forward incoming calls and SMS content directly to your smartwatch. It also displays your steps, heart rate, sleep and exercise history. You can also do an analysis of your health data on the app. The app has an easy to use interface and is simple to set up. 

With Keep Health, you can stay connected and monitor your health in the most efficient way. So, download it now and stay fit and healthy!