I use MFP and RK. Haven't got around to linking in a new HR monitor to RK. Diet is all about learning to mange hunger...and the best way to do that is upright and doing some physical activity. If you can train yourself to recognize hunger and not eat when you feel hunger, then weight control is far easier. What is needed is the OTC app (On The Couch), otherwise known as the OYA app which needs a link to the GOYFA app with a cattle prod up the user's interface.