Nynix LLC announces Knots 3D 4.5, an important update to their popular reference app for iOS devices. Offering a complete and close up view of a knot's structure, Knots 3D offers a 360 degree, 3D view of over 110 different knots, with the ability to tie, untie, and rotate the knots. Users can watch the knot tie and untie itself, or use the app's touch screen interface to accomplish it themselves. Version 4.5 brings a fix for the default device language. Knots 3D is $1.99 and can be downloaded from iTunes.