Name: iShowU HD Pro
Mac Platform: Intel
OS version: 10.7 and later
Processor type(s) & speed: 32 & 64 bits
RAM minimum: 256MB
Video RAM: No requirements
Link for more information: https://itunes.apple.com/us/app/ishowu-hd-pro/id449093286?mt=12
iShowU, the original screen recorder for Mac OS X, is your answer! iShowU is designed to record anything on your screen, instantly — both audio, and video!
If a picture is worth a thousand words, then a movie is worth a million. Imagine the time you’ll save writing Grandma an email about how to magnify her dock when you can just shoot a movie!