I was looking for soemthing that would help me understand the muscular anatomy and what I’d be working with different weight-lifting exercises. iMuscle2 fit that requirement perfectly. While I have many resources for weight-lifting exercises, this app helps me keep straight in my head what body part I’m working with what exercise. I found that I was missing some from my workouts completely, like the rear deltoids. The app itself functions well, and is easy to navigate. The only problem I’ve had is that the application locks up if I close my laptop lid and then re-open it while the app is on the screen. That may just be my particular configuration. I have a MacBook Pro summer 2012. I’d recommend this app to anyone trying to get a handle on what exercises are for what muscle, and to better learn the muscular anatomy involved. Yes, it is not an encyclopedia of exercises for each bodypart, but the exercises provided are quite enough for starters. I’m very pleased with this inexpensive solution to my questions.