RafterMate is a feet-inch-fraction construction calculator for carpenters and framers — rafters, stairs, on-center layout, board feet, and cut lists. Buy once, no subscription.
Questions, bugs, or feature requests? Email xyqshi@gmail.com and we'll get back to you. You can also use Settings → Send Feedback inside the app, which attaches basic diagnostics automatically.
Is there a subscription? No. RafterMate is a one-time purchase. The basic calculator is free; a single $9.99 unlock adds the pro tools.
Does it need an account or internet? No. All calculations run offline with no account.
How do I restore my purchase? Settings → Restore purchase.
How accurate is it? Trade math is validated against industry reference values to 1/16".