All I want is to monitor my workout for calories and heart rate. I have a HRM3 i currently use with Endomondo. I also have a Polar Heart Rate Strap and can use Polar's app. But I have been using Garmin instead. i may switch back to the POLAR though. I don't want to have to pay for the updated Endomondo.
So, can I just connect the HRM3 to connect without some other device?