Fitbit Coach App

I am notorious for paying monthly gyms that I never use. Wasted $. Last month I decided to try this app by Fitbit. I read reviews and it was only $40 a year. Wow. I've been working out at home almost daily. We don't need fancy machines or status that comes from being part of a gym to make it work. I am really liking the practicality of working out in my own place and haven't needed any machinery yet since designed workouts use your own body weight.

Have you used this app successfully? Any suggestions/comments/recommendations are always welcomed.