Dear EVERYONE who doesn't use coach's eye! It is awesome and worth the $4.99 for sure.
AND to answer your question about what it does....
It is an app that allows you to video record anything (i.e. stunts, jumps, tumbling) and then play it back and analyze it. You can play it in slow motion, to show the athlete exactly where things went right or wrong. It also has a function that you can draw on it with arrows or other fun color functions to show them what they should have done or whatever. THEN, during your analysis you can also speak to what is going on. So now that you have completed torn this kids back handspring apart and told the everything that was wrong, you can send it to the or their parents in a nice little attachment for them to review. Honestly, it really just helps them because no matter how many times we tell them what to do, when they actually see themselves physically doing it, it makes a world of difference.
Hope this helps!