Here is another app-enhanced fitness trainer that helps you build a stronger back and core. The Plankpad lets you try dynamic plank workouts with games to make your body stronger. By using it, you get to activate chest, arms, back, glutes, and other major muscles in your body.
The Plankpad can also be used as a balance board to work your lower muscles, improve your balance, and prevent injuries. You can mirror the games in the app to a TV via Apple TV or Chromecast to have even more fun.[where to get it]