A free library where every round adds up.
crochetpatterns.app is a free library of crochet patterns, every one free to open, with nothing to sign up for and nothing to download. Each pattern’s stitch counts are checked by machine, round against round, before it is published. Two named people draft them and run the checks.
- 113
- 7
- 3
- English, Português and Español.
- US · UK
How this works
Patterns are drafted with AI help, then checked by machine round against round. A named author runs the checks and approves each one. Nobody has crocheted these yet, so we promise the arithmetic, not the look in the hand.
Sell what you make
Anything you crochet from these patterns is yours to sell: any quantity, no fee, no credit required. That is recorded on every one of the 113 patterns, not granted case by case, and it is on the pattern page as well as here so that nobody has to find this one.
Drafted and checked by
Two people, each named, each with a page listing every pattern that carries their name. A credit here answers one question: who to come back to when a pattern turns out to be wrong.
There is no email address on this site yet, so the honest answer to "is there a human I can email" is: not by email, today. The profiles above are public, and the section on what to do with a broken round says what the missing channel costs and what a report needs when there is one.
Are the pictures real
No. Every picture on this site is a render: an image model was given the piece's real diameter and height, worked out from its own stitch counts, and the pattern's palette as literal colours. None of them is a photograph, none shows an object anybody finished, and no page here calls one a photograph. On a pattern page the render carries that line beside it — Rendered from the pattern, not photographed.
Deriving the prompt from the checked numbers stops the picture drifting away from the pattern on the way in. It does not check what came back, and that check has never run:
4 render matches the pattern — no image has been compared against its own prompt, so a render showing a piece the rounds do not make would not be caught here. Nothing has counted how many do.
So treat a render as what it is — a picture of what the pattern is aiming at, drawn by something that has never held yarn. The chart beside it on the pattern page is the honest artefact: it is drawn from the same counts the validator chained, one mark per stitch, and a chart cannot flatter a shape the arithmetic does not make.
Does anything here say "tested"
No, and nothing here will while it stays true. Not one of the 113 records carries a tier, because there is no check behind the word that could earn one. What a pattern page says instead is that the counts are checked and nobody has made the thing.
The two halves belong together. Checked counts are what make a mismatch findable: if your round comes out at 46 where the page says 48, the fault is inside the round you just worked rather than somewhere unknowable earlier. What nobody has established is everything the arithmetic cannot see — whether the finished shape reads as the animal it is named after, whether the fabric behaves, whether the assembly is any good.
There are no ratings on this site, no review counts and no number of makers, for the same reason: nothing has counted them.
Did these come from somebody else's pattern
No pattern here is copied from a published one. A draft starts from a search term and from reading real published patterns for the object, and what comes out of that reading is construction — how a snail's shell is built, what a fox needs in order to read as a fox at a glance.
That is how a pattern is drafted, and it is not something this shelf can show you. 112 of the 113 records name where they came from — Crochet Genie, the iOS app this library came from — and all 113 leave the three fields that would hold the drafting empty: the model, the prompt and the feature list. So the reading above is the procedure and not a receipt any pattern here carries.
Stitch counts and shaping are facts of construction and nobody owns them. The prose, the part names and the photographs of a published pattern are a different thing entirely, and none of them is reproduced: the sources a draft was researched against are recorded in the conversation that drafted it and never in the file, so no wording can leak from one into the other.
The whole route, from the search term to the published page, is set out on How this works.
If a pattern turns out to be wrong
There is a page for it, and it will tell you plainly that there is nowhere to send a report yet: Report a round that does not add up. A round number is what turns "this pattern is broken" into something that can be re-run against the validator.
There is no errata list, and the reason is worth saying out loud rather than leaving as an absence. All 113 records carry the same check date, 4 September 2026, and not one of them has been revised since. An errata page today would list nothing, which would be a worse answer than this one.
A fault in one of these is rarely a fault in only one of these. They come out of a shared drafting route, so a defect that got past the checks once is probably sitting in others — which is why a report naming a round is worth more than the round it names.
What is not here yet
113 patterns, 620 pieces and 5,734 rounds, and the count of every round is recorded in three operations: sc (single crochet), inc (increase) and dec (decrease).
A foundation chain or a slip stitch to join is recorded as single crochet, because the format has nothing else to count it with. That vocabulary is the boundary of the library, and it rules out more than it sounds like. No chain spaces and no taller stitches means no openwork, no granny squares, no filet, no lace edging and no blanket. Nothing here is graded to a body size. What the three operations do make is the round, spiralled shape — which is why the shelves look like this:
The site is also in Portuguese and Spanish. Both editions were made with AI help and have not been reviewed by a native speaker, and each one says so at the foot of every page.