Used by arborists, fishermen, firefighters, mountaineers, soldiers and boy scouts all over the world, Knots 3D will quickly teach you how to tie even the most difficult knot. With over 130 knots, Knots 3D will be your favorite reference! Grab a rope and have fun! Try Knots 3D without risk for a week. If you wish to request a refund, please send the order number found on the receipt that Google sends you by email at the time of purchase to our support email address.
* 135 unique nodes with frequently added new ones.
* Browse by category or search by name, common synonym or ABOK #.
* Supports horizontal and vertical modes as well as full screen (enlarge a node to see more details).
* Watch the knots bind and pause or adjust the animation speed at any time.
* Rotate nodes 360 degrees, 3D views to study them from any angle with a finger.
* Interact with the node on the screen using multitouch gestures like pinch to zoom and scroll to tie / untie.
* Can be installed on SD card.
* Completely ad-free and without in-app purchases.
Supported Android Devices : [4.0.3–4.0.4] Ice Cream Sandwich – [4.1–4.3.1] Jelly Bean – [4.4–4.4.4] KitKat – [5.0–5.0.2] Lollipop – [6.0 – 6.0.1] Marshmallow – [7.0 – 7.1.1] Nougat – [8.0-8.1] Oreo –  Pie