Great Utility
This is a wonderful app that is very well researched, written and illustrated. While I use the desktop app more often; the mobile app has come in handy when I forget how to tie that bend I just learned.
If you are reading reviews of older versions; please take into account that many of the issues have been resolved (such as more info on uses/cautions).
The price might dissuade some, but for a quality app from a small developer I feel it is totally justified; not to mention that the app actually teaches you something that you keep forever (not just another bird game ;).
mmmAndy about
Animated Knots by Grog, v3.5