StairCalc: Stair Builder Calc

StairCalc: Stair Builder Calc

Stairs, Decking & Concrete

2 ratings
1 review
$6.99 Free
In-App Purchases

Price history


Details

  • Released
  • Updated
  • July 14, 2015
  • December 27, 2025

Features

StairCalc: Stair Builder Calc screenshot #1 for iPhone
StairCalc: Stair Builder Calc screenshot #2 for iPhone
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StairCalc: Stair Builder Calc screenshot #7 for iPhone
StairCalc: Stair Builder Calc screenshot #8 for iPhone
StairCalc: Stair Builder Calc screenshot #9 for iPhone
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About

This app provides precise calculations for stair framing, decking, flooring, and concrete projects. It offers flexibility with various restrictions and units, making it an indispensable tool for construction professionals.

Stair framing calculations
Decking and flooring material estimating
Timber setout calculations
Concrete estimator for slabs and footings
Metric and US/Imperial unit conversion
General construction calculator with tape
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What's New in StairCalc

3.71

December 27, 2025

Version 3.71: Bug Fix System crash on start in some settings

Subscription plans

StairCalc - Stair & Deck Calculator

12 Month Subscription

$12.991 Year
How to cancel StairCalc subscription ⁉️

User reviews

Too unwieldy to use

I just purchased this in order to figure a stairway that will rise 7' with a 4' landing and another 7' rise. There is nothing intuitive about this and there are no instructions. Save your money. Now if I can just get the App Store to refund my $6.99.

Response from developer

Hi RevB, Sorry you were not happy with the experience. You can get detailed help on each button by double tapping it. Also the 'help' button on the top Left of the screen gives a quick overview. You do not need to enter in any order and values are saved as changed and recalculated. Main choices are to 1): Select whether the overall stair rise or run are both changing or either is fixed -' Long Press' to Change (orange Buttons). 2): Select if restrictions are to apply - 'Long Press' - ON or OFF - scroll up to set restrictions values. Please email us from Setting -> More Information->Support and we are more than ready to assist. Kind Regards StairCalc - Developers

Developer apps

FAQ

What types of calculations does StairCalc offer?

StairCalc offers detailed calculations for stair framing, including riser and tread dimensions, step inclines, and stairwell openings. It also provides features for decking and flooring setout, material estimating, timber setout, and concrete estimation for slabs, footings, and holes.

Can StairCalc handle different measurement units?

Yes, StairCalc supports both Metric and US/Imperial units (feet, inches, decimal, or fractions). You can easily switch between them by tapping the unit icon.

How does StairCalc assist with complex stair designs?

StairCalc allows for simultaneous application of multiple restrictions, such as tread size, step rise, and incline, to find solutions. It also accommodates scenarios with fixed overall stair rise, fixed stair run, or both.

Does StairCalc include a general calculator?

Yes, StairCalc includes an easy-to-use general calculator simplified for construction calculations. It supports basic functions and can calculate directly in feet/inches/fractions or decimals, with an accompanying tape that can be emailed.

How does StairCalc help with cost estimation?

For decking and flooring, StairCalc allows you to set pricing for materials and labor to calculate the total cost and cost per area. The concrete estimator also calculates total volume and cost, allowing for waste.

Is StairCalc suitable for international users?

StairCalc supports both Metric and US/Imperial units, making it adaptable for users worldwide. However, it advises users to check local building regulations as they can vary significantly.

What is the update frequency of StairCalc?

StairCalc was last updated on December 27, 2025, indicating active development and support. The current version is 3.71.

What are the subscription options for StairCalc?

StairCalc offers subscription plans for its Stair & Deck Calculator. These include a monthly option for $1.99 and an annual option for $12.99.