Prequilt does what you are asking, I think even the free version. https://prequilt.com. Source: about 1 year ago

PreQuilt is a desktop app with a subscription (you can pay it for a single month the one time if you want) that allows for this kind of design work. It’s not exactly cheap, but I saw it like a class or workshop on how to design my first quilting pattern. Without the app I would have had a much harder time, as the app can take into account seam allowance and fabric width (if I remember right), create blocks, etc. Source: over 1 year ago

For your dyscalculia, I'd use graph paper to see this. Or, I think something PreQuilt might be a huge help! Source: over 1 year ago

Prequilt This may be what you are looking for. Source: over 2 years ago

The pattern is a Ribbonpole quilt it's made using HST and was from this YouTube video I don't know what size the quilt in the tutorial is but I used the demo version of prequilt to size it down for a baby blanket and plan it out! Source: over 2 years ago

Marvelapp.com — Design, prototyping, and collaboration, free plan limited to one user and project. - Source: dev.to / 4 months ago

At this stage your main goal should be to prototype it and test it with people to validate the idea. Or at the very least have something people can look at and respond to. Don’t worry about building a coded and working version yet. Start with a clickable prototype which can be built using design tools. Most people use Figma these days but if you’re just starting out you could use something like Marvel, which is... Source: about 1 year ago

Marvelapp.com — Design, prototyping and collaboration, free plan limited to one user and one project. - Source: dev.to / over 1 year ago

Hi, I am doing research on some of the user testing tools out there like lookback.io, Marvelapp.com, maze.design, usabilityhub.com, userbrain.net, usertesting.com, userzoom.com. I would like to know about your experience. Source: over 1 year ago

As far as I can remember, I saw https://marvelapp.com/ doing it to add a prototype to the homescreen. Source: about 2 years ago