Knots 3D app for Android

Amazon has Knots 3D as their free app of the day (7/18...for about 6 more hours). It's regularly $1.99 I found it to be very informative with 3D "videos" of tying about 70 different knots, hitches, etc.

http://www.amazon.com/mobile-apps/b?...ode=2350149011

Hopefully this link works...if not, do a Google search on Amazon AppStore, and it should be featured on the front page.

I installed it earlier but haven't fired it up yet. Looking forward to playing with it this weekend.