Stay fit by taking the KruBoss calisthenics game challenge! Each card represents a number of push-ups or squats. Special Burpee cards! Do the exercises as they are called and go back to boxing stance in between. Select between "climb" mode (harder as you go) or "shuffle" mode (random exercise). The app captures a screenshots when you break and stop the drill or when you have reached the end! Share the screenshot and compare with your friends!