[iOS] Free - Knots 3D (Was $16.99) @ Apple App Store

Free for a limited time. Has been free many times before.

Used by arborists, fishermen, firefighters, climbers, military and boy and girl scouts the world over, Knots 3D will quickly teach you how to tie even the most difficult knot!

Accolades:

• Included in Scouting Magazine's "The Best Scouting Apps of 2016" and "Ultimate List of Scouting Apps" (2014)
• Featured in iOS Today, GQ Magazine, Boating Magazine, Guy Harvey Magazine and many other well known print and online and media.

Product Features and Functions:

• 164 unique knots with new ones added frequently.
• Browse by category or search by name, common synonym or ABOK #.
• Landscape and portrait modes as well as fullscreen (Zoom in on a knot to see greater detail).
• Watch knots tie themselves and pause or adjust the speed of the animation at any time.
• Rotate knots in 360 degree, 3D views to study them from any angle with a swipe of a finger.
• Interact with the knot on screen by "scrubbing" over the knot to advance or rewind the animation.
• High res graphics with photo-realistic rope textures.
• Dark mode / Light Mode
• Completely self contained — No internet required!
• Compatible with iPhone, iPad, and iPod Touch (Universal App)
• Fully localized in 21 different languages
• No advertisements. No in-app purchases. No subscriptions. Ever!