TradeCalc Pro: Stair & Rafter

TradeCalc Pro is the visual construction calculator built for carpenters, deck builders, framers and general contractors. Stop guessing stair risers or converting tape fractions to decimals in your head. TradeCalc Pro draws live 2D blueprints that update with every keystroke. LIVE 2D BLUEPRINTS • Stair stringers: exact risers, treads and stringer throat depth, down to 1/16". • Common rafters: bird's mouth, plumb cut and seat cut, drawn as you type. IRC STAIR CODE CHECKS • Instant pass/fail against IRC R311.7 riser and tread limits. • Catch problems before you cut, not at inspection. EXACT FRACTIONAL MATH • Add, subtract, multiply and divide feet, inches and fractions directly. • Precision down to 1/64" for cabinetry and millwork. • Exact rational math engine with no decimal rounding errors. BUILT FOR THE JOB SITE • Glove-friendly keypad with large touch targets and haptic feedback. • High-contrast dark theme for bright outdoor light. PROJECT TAPE & PDF CUT SHEETS • Save calculations into job folders (for example, "142 Elm St – Deck"). • Send a clean 1-page PDF cut sheet to your crew or lumber yard by text, email or AirDrop. FREE vs PRO • Free: fractional math, live stair and rafter diagrams, and IRC code checks. • Pro: unlimited project folders, lumber takeoff, and PDF cut sheet export. • Choose Monthly, Annual (with a free trial for new subscribers), or a one-time Lifetime license. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple ID > Subscriptions. Privacy Policy: https://niprajdigital.com/privacy Terms of Use: https://niprajdigital.com/terms Eula - https://www.apple.com/legal/internet-services/itunes/dev/stdeula TradeCalc Pro is a calculation aid. Always confirm requirements with your local building authority.