Knots 3D – Amazon Appstore for Android – Free app of the day

Gain a new perspective on knots with this how-to reference app. Learn to tie 71 knots, browse by category or classification, and watch the knots tie themselves! Interact with the knots via multi-touch gestures. Not compatible with the LG Optimus. Browse descriptions, usages, strength, and history!

Get it here
http://www.amazon.com/mobile-apps/b/ref=topnav_storetab_mas?ie=UTF8&node=2350149011
http://www.amazon.com/gp/product/B00701L5XS?ie=UTF8&ref=mas_faad