I created an app which counts how many times you hit each key on your keyboard. Check it out:
http://macheads101.com/pages/download...
The source is on Github:
https://github.com/unixpickle/HeatKey
Watch video Track Your Keyboard Usage online without registration, duration hours minute second in high quality. This video was added by user macheads101 19 October 2014, don't forget to share it with your friends and acquaintances, it has been viewed on our site 4,350 once and liked it 51 people.