add-on for the run app, using the Karvonnen HR method.
This app is an extra feature implementation for the Run.app of the bangle.js. I would like to have it running in the run.app, as an extra screen, accessible by swipe right/swipe left. The calculation of the Heart Rate Zones is based on the Karvonnen method. It requires to know maximum and minimum heart rates. More precise calculation methods require a lab. Other methods are even more approximative. Do copy, reuse, share the code, my only interest is to find help to have it running on Banglejs2 so that I can run with it :).