20 Minute Ab Workouts Free: Power 20!

Beautiful, well-designed, extremely effective.A full days workout in just 20 minutes.A full-body workout with special emphasis on the core, including back, sides, and both upper and lower abs.The Power 20 Amazing Abs FREE app gives you one routine per level. For even more workouts, get the Pro version. REQUIREMENTSCompatible with iPad 2 and up, and iPhone 4 and up.