Web app · Reference
Knotbench
Tie any of 30 knots — vector-drawn, step by step, in your browser
Bowline, cleat hitch, figure-8 follow-through, palomar, trucker's hitch and 25 more across boating, climbing, fishing, household and decorative — each drawn as line art that draws itself one step at a time, with when to use it, strength, failure mode, common mistakes and a practice timer. Free, no install.
Stored in your browser only. Nothing you do in the web version is sent to our servers. Clear your browser data and it's gone — so export a backup from the in-app menu if you want to keep it.
In your browser
What you can do in Knotbench on the web
30 knots in five categories
Boating (8), climbing (6), fishing (6), household (6) and decorative (4) — the full bench, nothing locked, nothing behind a subscription.
Vector line art, not photos
Every knot is an SVG path that stays crisp at any zoom, with zoom, rotate and reset controls on the canvas instead of the phone's pinch and twist.
Step-by-step draw-on
Advance the steps and the rope draws itself segment by segment, with the same wording and the same shorthand hints as the app — "rabbit out of the hole", "same direction!", "one lock only".
When to use, strength, failure mode, mistakes
Each knot carries its real notes: what it's for, roughly what percentage of line strength it holds, how it fails, and the mistakes that cause that failure.
Practice timer with best times
Pick a knot, tap START, tie it from memory, tap DONE. Every run is logged, your best time per knot is kept, and the bench charts what you can tie fast.
Favourites and a practice heatmap
Pin the knots you actually use, and see a 12-week heatmap of the days you practised plus a best-time-per-knot chart.
Screens
Every screen, rebuilt for the browser
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1
Knotbench
How many knots you can tie from memory, a search across all 30, the five categories and your pinned knots.
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2
Category
Every knot in one category with a thumbnail of its line art and your best time.
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3
Knot canvas
The vector canvas with zoom/rotate, step controls, and the use, strength, failure-mode and mistakes notes.
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4
Practice timer
Pick a knot, time yourself tying it from memory, and keep the best run.
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5
Favourites
The knots you pinned for quick access at the dock, the crag or the riverbank.
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6
The bench
Best time per knot, a 12-week practice heatmap and every knot you have timed, fastest first.
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7
Settings
Rope thickness, canvas grid, backup export, sample data and clearing your times.
Try it with sample data: Pins five knots and adds twenty timed practice runs over the last three weeks — a bowline coming down from 21.9s to 9.4s, plus cleat hitch, clove hitch, figure-8 follow-through, palomar, trucker's hitch and more. You can start fresh at any time.
Ready? It's free.
Sign in once and every All Things AI web app opens instantly. No install, no subscription, no data leaving your browser.
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Questions
Is the web version of Knotbench free?+
Yes. Sign in with a free All Things AI account and use every screen — no subscription, no in-app purchases.
Where is my data stored?+
Only in this browser's local storage. Nothing you enter is sent to our servers, so we can't see it, back it up, or restore it. Clearing site data, a private window, or another device starts empty. Export a backup from the in-app menu to keep it.
Do I need an account?+
You can read about the app without one, but you must sign in to open it. Sign-in is free and takes a few seconds with Google.
How is the web version different from the Knotbench iPhone app?+
The iPhone app uses pinch-to-zoom and twist-to-rotate on the canvas; the web canvas gives you zoom, rotate and reset buttons instead. The drawings are schematic vector line art — enough to read the shape and the sequence at arm's length, not a photograph of your specific rope. Best times live in this browser only, so they don't follow you to another device. Reference only: climbing tie-ins and any life-safety knot still need a partner check every single time.