New to FB

Hi, I currently pay for 6 month subscription for BeachBody on Demand, my subscription is due next month. I am considering cancelling it because I don't want to pay for it anymore. Then I found Fitness Blender. Is it going to stay free and everything is free? Does everyone like it? I am curious how it can be free for everyone?

I want to build muscle and lose weight. I have a very hard time losing weight.

Is there an APP ? If not, I would suggest it.. :)

Thanks!