Here is another workout equipment that adds instability to your routine to push your body harder. The Edge-Board Extension Trainer combines with your smartphone to make exercise more fun. You will be able to track results on the device or project M-Trac onto your TV. The trainer has curved wheels for arcing turns and braking action for shorter extensions.
The Edge-Trainer has ergonomic handles and a removable device tray. Looks like another fun tool for intense core training.