Learn to tie over 240 knots for fishing, climbing, boating, sailing, camping, scouting and other ropework.
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.
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.
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
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.
I’ve been through quite a few knot “guides” in the App Store, and in my honest opinion this one is hands down the BEST one out there. First off, the repertoire is absolutely amazing. It contains every essential knot that one could ever need on a day-to-day basis, for hobbies, survivalists, climbers, or professionals which job would require some form of knot tying. In addition, it contains lots of other specialty or unique knots, that I haven’t seen in other apps altogether as they are here. Secondly it has the best video/animated how to section I’ve seen out there as well. The graphics are great, and the fact that you can change the speed of the animation as well as it’s orientation/perspective gives you complete control, allowing users to tie even the most difficult of knots with ease. As a bonus, it gives a detailed written description of each knot, as well as information about it’s origin and any adaptations over time. You can even select similar knots by selecting one of the options it gives you at the bottom for a quick change to a different note for the same function. The only way this app could possibly improve, which it already does on a fairly regular basis, would be to add more knots! Although to be fair, I don’t really know how many more knots are out there that aren’t already covered. Take a look at the animations of, but they have available and if you like it, it’s definitely worth the purchase. I’ve been a happy customer for years. Five stars all the way!!
Developer Response
Wow! Thanks for the thorough and complimentary review! More knots are in the works! Thanks again. Much appreciated!
Always Struggled to Remember Knots! “Knot” Anymore!!
Raconteur Robby
I’m a highly intelligent person and I did sailing for years so when I say I was a mess when it came to knots I hope you understand how out of character that was for me. It didn’t seem I could learn them in any way that could stick with me. I tried and tried until I got THIS APP!!! I’ve climbed with rappelling ropes and done tree trimming, and I literally have whipped this app out while dangling above 50 feet of nothing below me and adjusted my Figure 8 Knot. I even know the NAMES of knots and alternatives because of this app!! I don’t recommend apps lightly, but this is one of the most consistently useful apps I have. It’s extremely clear, and you can slow the making of the knot down in the short animation so you see the key moments in making it. The descriptions are clear and for things like lashing stuff down in the back of your truck, or climbing, sailing, or even ornamental rope work, you can’t get a better or more informative app than this. It tells you where the knots are best used and what their best strengths are. Sure, you can look up more information online if you NEED more, but I find it’s more than enough what this app provides. It’s a concise and immediately useful guide to tying knots correctly every time. I have so many useless apps people have gotten me to download that when there is a great reference app like this, where all the information stays right on my phone even when there is no reception for the internet, it makes a real difference. I can’t recommend it enough; simple, straightforward brilliance.
Developer Response
Thanks for the review! We are glad you like the app and find it useful!
The best way to learn a new knot!
W5TGB
I’ve been fascinated with knots since I was a Cub Scout, some 60+ years ago. I still have my first Boy Scout Manual and the only hand notation, in the table of contents, is the word Knots. That’s first thing I wanted to learn, how to tie a good knot. Knots 3D is the first application I bought, when I got my first iPhone, many years ago. I can’t give you a date, but as I recall, it was around 2011 and there were only about 70 knots in the application, at that time. Now, there’s 126 and I expect that number will continue to slowly increase. I have a large, hard bound copy, of the Ashley Book of Knots and it is an excellent reference, but for most of my needs, for the last several years, Knots 3D has been my go to source for learning, and teaching others, how to tie a good knot. I absolutely love the 3D renderings, in Knots 3D and I consider it to be the very best way to learn a knot. I have gifted this app to many of my friends and family members and will continue to do so.So, if you want to learn how to tie a good knot, in my opinion this is the best source you’ll ever find. TinTexas
Best knot app, hands down!
Jay Knorr
As a Scout leader, I find this app SUPER-HELPFUL, being able to show someone, (including myself), step-by-step, how to do some really difficult knots, as well as, the easy ones. Sometimes one may not remember, how to do a specific knot tied before, & this app gives you an easy, “oh yeah, now I recall” quick reminder, which is really handy. It’s fun to watch the “lightbulb” go off, so-to-speak, in someone else’s face, as they “get it,” when this app is able to show, (most of the time), with great ease, how to tie a knot, step-by-step. Being able to slow down, or speed up, the steps, as well as being able to turn the view around, to an opposite viewpoint. It’s great! I HIGHLY recommend this app. It is the absolute BEST, at showing how to tie knots. In fact, today, I am telling all of my fellow leaders in my troop to download this app, as we are responsible for teaching some knots to some fellow scouters, and scouts, at an upcoming camp-o-ree. Thumbs up, 5 stars. Kudos to the app developer(s) on such a well-done app!
v11.7.0
- Improved search
- Performance and stability updates
v11.6.0
- 16 new knots (241 total)
- New Mats knot type
- Improvements to search
- Updated knot names, synonyms, descriptions and histories
- Minor bug fixes
Version 11.7.0
The developer, Nynix, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
Larger Text
Dark Interface
Differentiate Without Color Alone
Information
Seller
David Boren
Size
533.9 MB
Category
Reference
Compatibility
Requires iOS 16.0 or later.
iPhone Requires iOS 16.0 or later.
iPad Requires iPadOS 16.0 or later.
Mac Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.