Independent developer
Construction calculator apps built for real jobsite work.
Lightray Studio makes focused construction calculator apps for builders, carpenters,
contractors, estimators, and tradespeople who need fast, repeatable calculations without
unnecessary friction. Site Calc Pro is the workflow-first calculator in the range: feet-inch
math, metric conversions, roofing, rafters, stairs, material estimates, editable project
tape, and no subscription.
Site Calc Pro available now
Launch price $9.99
One-time purchase. No subscription.
Apps
Two construction-focused calculator apps are currently featured here: the workflow-first
Site Calc Pro and the established Construction Calc Pro.
Site Calc Pro
Available now • Launch price $9.99
A serious construction calculator that remembers your work, not just your last answer.
- Feet-inch-fraction and metric construction math in a familiar calculator layout
- Roofing, rafters, pitch, rise, run, diagonal, hip/valley, and jack workflows
- Stairs, shapes, square-up, crown / compound miter, and practical layout calculations
- Material estimating for drywall, tile, paint, brick/block, flooring, fence, posts, studs, roofing, concrete, gravel, and more
- Cost, wastage, board feet, density, and weight/volume tools for repeated estimating work
- Editable tape with saved projects, duplicate entries, copied results, and reusable history
- Built-in long-press help with examples, key sequences, and output explanations
- One-time purchase with no subscription
Construction Calc Pro
Established app
A broad construction calculator with material estimators, measurement tools, and conversion helpers.
- 33 material estimators including concrete, paint, paving, rebar, roofing, and tiles
- 15 measurement calculators including stairs, siding, squaring, rafters, and floor joists
- Metric and feet/inches inputs
- Built for repeated construction calculations on site
Support
Current apps
Site Calc Pro is the workflow-first paid app with editable tape and saved projects.
Construction Calc Pro remains available as the broader established companion calculator.
