This is by far the best application for use while at the gym. Ive tested out iFitness (one of the top 25 iPhone apps) and it cant even compare. iStayFit is extremely easy to use as well as customize. Im able to keep track of all my workouts without disruption. If you accidentally exit the program, no problem, you can easily resume your current workout. The author of this software consistently releases updates and definitely listens to the community! Dont waste your money on other fitness applications. If you are a gym veteran then this is the software you want.