Our app should support all Smart sensors (mainly chest straps, others others may also work as long as the Bluetooth protocol is correct). 

Compatible Hear Rate Monitors (Bluetooth smart) we can guarantee to work with our app are: 

If you are using some other Heart Rate Monitor using Bluetooth Smart you need to test if it is compatible.

If you have any problems connecting your Smart device, please check:
- that your phone has  Android OS 4.3 or higher with Bluetooth Smart Support
- that the monitor is not connecting to any other app
- remove the monitor from your phone's Bluetooth settings and  connect it directly from the app settings 
- while pairing on some devices you may need to turn on location service and turn Wifi off
- Even if you don't get the device connected you can check if it still works during a workout. Start a workout and check if it is still connected.

Currently we don't have plans to add ant+ support.