My Yarn Stash is a web-based yarn inventory app built for knitters and crocheters who want a clear view of the yarn they already own. It focuses on simple, manual stash tracking without spreadsheets or social features. Users can track yarn by weight, fiber, color, brand, quantity, and assign yarn to projects to see what is in use versus available. Optional AI-powered label scanning helps with faster data entry, but the core app is free to use for manual tracking.