I have a FitBit Charge HR coming my way soon and have started to use the app to track both my activity level and diet. After almost a year of being away from cycling (getting married does that to you) I'm at the point where if I don't get more active and eat a bit healthier now I'm going to make things much more difficult for me down the road. Compared to some of my friends who've gotten married I've not done too bad, outside of the honeymoon where I ate at way too many micro-breweries (while sampling their beers) and lots of ice cream and put on about 5 pounds in a month, I've only put on about 4 pounds in the first year of being married, but still I'm about ten pounds overweight now and have lost some of the muscle mass I had from two years of regular bike riding.
I'm definitely a numbers/stats guy. I'm much more conscientious about things when I can see numbers to back them up. So I've started using the FitBit app to track my general activity, and after a few days of playing with it, decided to start using the MyFitnessPal app for tracking food (the FitBit food database just didn't have the things I was eating as I eat mostly homemade food whereas the FitBit database is mostly prepared foods or restaurant items).
I'm curious if others are using similar devices or methods for tracking their fitness and/or diet?