I have been using this app to record my workouts for two years now and its been great!
The app is simple and easy to use. The design is minimalistic yet pretty.
It has all the basic functions you will generally need, and with the pro version you get even more.
This app is a part of my life now and has been very helpful in getting myself fit.
I would definitely recommend it!
Fablous13 about Strong Workout Tracker Gym Log, v3.3