Ive had the app for a few years and there have been lots of improvements over time. My sons coach always asks me about certain aspects of his matches. I can email or look up the stats for him. Its also nerve racking to watch and "having" to keep stats makes me focus, keep track of the score, and stay in the match.
There are still a few things Im trying to figure out how to properly utilize but my basic functions are great.
Tennisace42 about My Tennis Stats, v2.1.3