GetFit
This is an application to monitor daily fitness of a user based on several parameters. This application connects to an external BLE(Bluetooth Low Energy) device. When the application launches, it searches for nearby BLE devices manufactured by a specific company. On availability of multiple device, user needs to select a device which one to be connected. The device periodically sends health data, which can be observed/monitored through the application. Check out more such health and fitness apps
here.