StitchPlus was born from a specific frustration that every maker knows. The yarn you need is discontinued. Or you have something beautiful in your stash that almost works. Or you need to size up three sizes and the pattern assumes you won't.
Yarn substitution requires maths. Not complicated maths — just precise maths that has to be applied consistently to every stitch count in a pattern. For a sweater with 40 sections of shaping, that's 40 calculations. For someone making it in a different size, it's 40 different calculations again.
Most crafters either skip it (and discover on row 40 that the numbers are wrong), use a calculator and spreadsheet (20 minutes of careful maths for every project), or ask on Ravelry or Reddit and wait days for an answer that may or may not be correct.
StitchPlus was built to give every crafter — experienced or absolute beginner — the same result a skilled tech editor gives a professional pattern designer. Precise numbers, clear instructions, no guessing.
The deterministic calculator runs first, always. AI adds expertise and context. Code does the numbers. We think this is the only honest way to build a calculation tool.
Each module is built for that craft's specific unit system. Quilting uses ¼" seam allowances, not 1.5cm. Cross stitch uses fabric count, not gauge. Every craft gets the right tools.
Crafters work on their phones. At the yarn store, on the couch, at knit nights. StitchPlus is a PWA that installs to your home screen and works offline.
Affiliate rates that are actually generous. Designer widgets that help pattern creators reduce support load. Yarn shop plans that turn substitution questions into confident sales.
7 days free. No card. Start calculating in seconds.