I've been following Mark's trainings for almost 9 years now. This app, is the most complete program that he's created so far. You can find workouts for different levels that will help you build customized training plans. Mark's guidance throughout each workout helps you push yourself more, exactly when you need that push and without all the excessive pep talk. That way you can focus on the workouts and maintaining the correct posture throughout. If you are looking for a way to train and home, this will do the work 100%. I haven't been to the gym for the last 4-5 years and my body is better than 10 years ago (which was in a very good shape).