Got this email from Jackwood!
pretty good tools, Free untill Oct 8
His email is as follow:
Hi There
I just wanted to write to let you know about a cool FREE plyometric training app I have been using on my Iphone to measure ground contact time and jump height.
It is called Plyo Coach. Just go to the Apple App store and search for Plyo Coach and you will find it.
It is free until the 8th of October.
This isn't my app, it is just one I was recently put onto that I thought was worth sharing. So after the 8th I am not sure what it will cost, but for now it doesn't cost anything.
Enjoy
Jack Woodrup