I adore this app. It does everything I want and even exceeds my expectations. It has different categories to work on and different challenges that are all absolutely wonderful. The ONLY thing that was annoying about this app was that after having it for about two days it started crashing every time I opened it and it did that for two days. Then I deleted it and re-downloaded it from the App Store and now its fine. I hope it stays okay now.
wkdjvcn about 30 Day Fitness Challenges, v2.1