Granny Square Designer is a crochet planning app — not a pattern maker. Choose a square from the library, assign colors round by round, plan bags, blankets, and custom projects, and the app calculates yarn automatically. Export a personal PDF crochet guide anytime.

Give classic granny squares a fresh, modern look. Plan bags, blankets, and custom projects with confidence.

Pick a square from one of our categories — classic, solid, flower, mitered, circle, other, or seasonal. Assign colors to each round, mix and match square designs, save your ideas, and compare what looks best.

Get a clear summary with a preview image and square size, how many squares you need for your project, and an estimate of yarn usage based on your hook size. You’ll also get a diagram and written instructions in your preferred crochet terminology (SK, CZ, UK, US, DE, FR, ES, IT, PL, HU). We support both metric and imperial units.

Try it free: 1 classic granny square + 1 project at a time. The free version includes all core features (square coloring, project planning, automatic yarn calculation, PDF export). You can upgrade any time to unlock the full square library and unlimited projects.

If you have trouble signing in, tap “Contact support” in the app or email [email protected]
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Privacy:
– we only store your email and your language / terminology / measurement settings required for the app to run
– we do not ask for any other personal data

Age rating: for users 13+.

Operator: LT Studio s.r.o.

Granny Square Designer – the crochet planning app.
Make it better. Make it yours.