I like FitOn, has good exercise routines, but it is pushy to buy the monthly prime plan. You don't have to pay to use the app or the free routines.
I have used so many. I really like Down dog you can choose from the yoga the HIIT app and it's never boring. However the best app I find for short workouts just to get me moving is the 7 minutes app (it's got a green logo). I can do a quick workout before I go take my shower. And I challenge myself by trying to do 3 rounds (21 minutes).
Well i recommend 30 days tobget slim because it has the best excercises plus additional features for your weight control and other