This app is very young and tested only for LG G2 and Polar H6! Please don't rate but e-mail me with your ideas.Do you use BLE heart rate belt and are you angry Runkeeper doesn't support it? Don't be angry yet and use this app!What can this app do?- Use BLE devices (tested with Polar H6)- Measure heart rate and save it- Upload heart rate to some Runkeeper workout- Voice read if heart rate is over/below tensHow does it work?Scan all BLE (ART, 完美LE, Blueetooth Low Energy) devices. You can connect and show heart rate. If device isdisconnect try connect again. All heart rates will be saved to local database. On screen History you can view all heart rates. There you can log in to the Runkeeper and upload heart rates to one of last five workouts. Heart rate time is linked to activity distance time, don't worry about bad linking (but be aware with change system time!)How use it?Wear a BLE belt. Run this application. Scan all BLE devices (right-top button). Click on some bluetooth device andconnect it (right-top button). If device is disconnect try connect again. Wait if heart rate has changed. Thenopen Runkeeper (stay on measurement screen; use HOME button, don't back to the main screen) and do some workout. If Runkeeper workout is uploaded to the server, exit measurement screen and go on history screen. Login to Runkeeper and upload heart rate. You will be asked which workout use. Select right workout and wait. If "OK" message appears your heart rate is on the server.