Leather Yield Calc is a local-first paid utility: Offline leather hide square-foot, usable yield, pattern-piece area, waste, and material-cost calculator for leatherworkers quoting small projects. Use it to: - enter the job or batch inputs in one offline sheet - calculate a visible result summary immediately - keep planning boundaries visible before acting on the numbers - share a plain-text result sheet from the app - avoid ads, subscriptions, analytics SDKs, account setup, or server dependency Why people pay for it: - the target users work with materials, time, or planning details where small mistakes cost money - the app is faster than rebuilding the same worksheet in a spreadsheet - the paid promise is narrow, offline, and repeatable Leather Yield Calc is a material and quote planning tool only. It does not replace hands-on pattern layout, supplier grading, or leatherworking judgment.