Trigger Points
I really like this app. I use it on my iPhone and the Surface3 almost on a daily basis. I am a physical therapist and it is great for patient education. It has great application overall. The only downside I have found is that it doesnt have some of the deeper layered muscle groups. But as far as ease of use and quick visuals for most cases it cant be beat!
ActiveinAK about
Muscle Trigger Points, v4.3