Meet the StealthGO: another portable plank board that combines with your iPhone or Android device to gamify workout. It comes with 4 mobile games for dynamic ab training. It has angular arm pads with ergonomic hand grips to keep you in the perfect plank position.
This plank trainer supports up to 300lbs of weight. It lets you use your body motion to control games. It comes with Stealth Speed Gliding, Color Chase, Galaxy Adventure and Space Escape games. It should work with most smartphones on the market.[where to get it]