A major appeal of granny strips is using multiple colors. A "Random Strip Generator" or "Palette Balancer" would help users visualize how their yarn stash will look before they start.
For shaped items like garments, a feature that provides step-by-step instructions for granny stitch increases (chain 2, 3 dc in same space). 4. Modular "Stitch Hybrid" Library Granny strips are often combined with other textures. granny strips
A calculator that provides the exact starting chain count based on a user's desired width and tension (gauge). Bella Coco's tutorials suggest starting with multiples of 3 + 2 for turning. A major appeal of granny strips is using multiple colors