Knots 3D

29.6K reviews
Content rating
PEGI 3
1M+
Downloads
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About this app

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

Knots 3D is the original 3D knot-tying app, first released in 2011 and rated 4.9 by tens of thousands of users worldwide. Choose a knot app with care, as your safety may depend on it.

Accolades:
- Google Play Editors' Choice
- Winner of Google Play Best of 2017, Hidden Gem category
- Included in Scouting Magazine's "Best Scouting Apps of 2016"

Watch each knot tie itself in 3D, slow it down, and turn it around until it makes sense. Browse by category or type, search by name, common synonym or Ashley Book of Knots (ABoK) number, or describe what you need the knot to do. Save your favorite knots for quick review.

Permissions:
No internet or other special permissions required.

Features:
- 241 knots in over a dozen categories, with new knots added regularly
- No ads, no subscriptions and no in-app purchases. Ever!
- Completely OFFLINE and self-contained. No additional downloads or internet access required!
- 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
- "Scrub" over the knot with a finger to advance or rewind the animation
- Mirror (left-hand) mode, zoom, and rotate the view to match how you hold the rope
- Describe a task in your own words, like "tie a boat to a dock", to find the right knots for the job
- High-res graphics with photorealistic rope textures
- Dark mode and light mode
- List, Card and Icon view options
- Create your own custom categories to group knots, such as "Mastered", "Practice" or "Top Ten"
- Add personal notes, links and your own search keywords to any knot
- Share a knot link by text message, email, social media and more
- ABoK numbers for cross-reference to The Ashley Book of Knots

7-Day Refund Policy:
Try Knots 3D risk free for a week. For a refund, send the order number from your Google receipt to our support email address.

Includes the knots people look for most: Bowline, Clove Hitch, Figure Eight, Trucker's Hitch, Square Knot, Sheet Bend, Prusik, Taut Line Hitch, Cleat Hitch, Palomar Knot, Uni Knot, Double Fisherman's Knot, Alpine Butterfly, Monkey's Fist, Munter Hitch and many more.

Every knot comes with a description of what it is for and a list of common uses. Most also include the other names the knot goes by, strength and reliability notes, structure, related knots, ABoK numbers and history.

Available in 25 languages:
Arabic, Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian and Vietnamese

Categories:
- Essential Knots
- Arborist
- Boating
- Camping
- Caving
- Climbing
- Decorative
- Diving
- Fire & Rescue
- Fishing
- Military
- Neckties
- Pioneering
- Rope Care
- Scouting
- Theatre & Film

Types:
- Bends
- Binding
- Coils
- Friction Hitches
- Hitches
- Lashings
- Loops
- Mats
- Multi-Loop
- Quick Release
- Stoppers
- Whippings

The complete list of knots:

https://knots3d.com/en/complete-list

Missing a knot? Suggest one from inside the app.

Knots 3D is a learning reference. Learn from a skilled instructor if you plan to use ropes or knots in a situation where failure could cause property damage, injury, or death.
Learn to tie over 240 knots in 3D!
Updated on
Oct 31, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

27.8K reviews
Craig Gilroy
May 14, 2025
I was looking for a quick reference for technical rescue applications as well as training purposes. We have a lot of go to knots but I use many infrequently and this is a great tool to quickly recall past knowledge. Haven't paid for an app for years but the reviews convinced me and I was not disappointed. Great work and can easily teach a novice.
12 people found this review helpful
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Nynix LLC
May 15, 2025
Glad we were able to exceed your expectations! Thanks for the review!
John Ross Sutherland
March 17, 2023
A truly exceptional app which teaches a wide variety of knots in different areas of endeavour, including sailing, camping, and the every day. The app gives easy to follow animations for each knot which can be slowed, paused, or reversed so that the user can fully understand tying technique. It also gives ABOK references and small historic factoids on usage, alternative names, and similar knots. I wouldn't hesitate to recommend this app to anyone interested in knots for any purpose whatsoever.
14 people found this review helpful
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No Funsies
August 6, 2026
If your job or hobby involves ropes, get this app! It shows you not only how to tie, at any angle at and speed, but it gives you the uses and history too. I've used many knots not even related to my industry because I found them on this app.
12 people found this review helpful
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What’s new

- 5 new knots (246 total)
- Updated knot names, synonyms, descriptions and histories
- Improved search
- Fixed a crash at launch on some devices
- Fixed a bug with the disable timeout setting
- Fixed and updated the Snell Knot animation

App support

About the developer
David Boren
app_support@nynix.com
10519 N Canterbury Dr Highland, UT 84003-9304 United States

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