Knot-tying, like calculus and corpse-disposal, is a skill you really only need when you really need it. And when you really need to know how to get out of a San Diego Jam, Knot Guide HD will show you how.

Knot Guide, a longtime staple of the App Store, has received an HD upgrade and is now optimized for the iPad. It includes comprehensive instructions and color illustrations for more than 90 knots—everything from Constrictors to Monkey's
Fists—in 17 categories such as Bindings, Lashings, and Whippings. Find the tie-down you need via the categories, an alphabetical browsing list, or search by name. $3 in the App Store [Winkpass Creations via TUAW]