Runmefit is a free lifestyle app developed by StarMax for Android users. It offers a range of smart wearable features including music control, call and message notifications, remotely taking pictures, and finding mobile phones.

In order to access these features, you are required to grant the app permission to access your phone's SMS and call history. The core function of Runmefit is to communicate with intelligent wearable devices to provide message notifications and phone reminders. Without this core function, the app may not work efficiently.

Overall, Runmefit is a handy app for those who use smart wearables and want to manage their phone's notifications and calls with ease.