Is this your app? Claim this page to add your own description, links and contact info. It's free. →
Version
1.6
Size
19.65 Mb
Updated
2 weeks ago
Released
10 Apr 2026
Description
Professional Stair Builders don't need an app to build stairs; they just know how to build stairs. This iPhone app is for rough-frame carpenters who don't build stairs every day but could use a stair-building calculator to check their calculations.
Build a set of stairs that you are gonna be proud of. With Stair Tangent Dark, you can eliminate cumulative math errors when building or constructing stairs.
With the Elliptical Stairs calculations and Ellipse Point Layout for X-Y plotting, you can rival any professional stair builder's capabilities.
Twelve different types of stair calculators
Build Stairs with:
Locked Tread Width
Unlocked Tread Width
Number of Risers
45 Degree Stair Stringers
Flared Stair Stringers
Circular Stairs
Elliptical Stairs
Ellipse Point Layout
Stair Landing Height
Arc Radius
French Winders Technique
Polygon Winders
Enter a couple of dimensions to see all of the information you need to build your stairs.
Layout circular stairs in 10 minutes or less. Elliptical stairs in 30 minutes or less.
This app, the Dark version of Stair Tangent, does not calculate the cumulative dimensions for the stair stringer diagonal.
Estimates
Availability
Devices
iPhone5s
iPadAir
iPadAirCellular
iPadMiniRetina
iPadMiniRetinaCellular
iPhone6
iPhone6Plus
iPadAir2
iPadAir2Cellular
iPadMini3
iPadMini3Cellular
iPodTouchSixthGen
iPhone6s
iPhone6sPlus
iPadMini4
iPadMini4Cellular
iPadPro
iPadProCellular
iPadPro97
iPadPro97Cellular
iPhoneSE
iPhone7
iPhone7Plus
iPad611
iPad612
iPad71
iPad72
iPad73
iPad74
iPhone8
iPhone8Plus
iPhoneX
iPad75
iPad76
iPhoneXS
iPhoneXSMax
iPhoneXR
iPad812
iPad834
iPad856
iPad878
iPadMini5
iPadMini5Cellular
iPadAir3
iPadAir3Cellular
iPodTouchSeventhGen
iPhone11
iPhone11Pro
iPadSeventhGen
iPadSeventhGenCellular
iPhone11ProMax
iPhoneSESecondGen
iPadProSecondGen
iPadProSecondGenCellular
iPadProFourthGen
iPadProFourthGenCellular
iPhone12Mini
iPhone12
iPhone12Pro
iPhone12ProMax
iPadAir4
iPadAir4Cellular
iPadEighthGen
iPadEighthGenCellular
iPadProThirdGen
iPadProThirdGenCellular
iPadProFifthGen
iPadProFifthGenCellular
iPhone13Pro
iPhone13ProMax
iPhone13Mini
iPhone13
iPadMiniSixthGen
iPadMiniSixthGenCellular
iPadNinthGen
iPadNinthGenCellular
iPhoneSEThirdGen
iPadAirFifthGen
iPadAirFifthGenCellular
iPhone14
iPhone14Plus
iPhone14Pro
iPhone14ProMax
iPadTenthGen
iPadTenthGenCellular
iPadPro11FourthGen
iPadPro11FourthGenCellular
iPadProSixthGen
iPadProSixthGenCellular
Pricing by country
| Country | Price |
|---|---|
| Canada | 12.99 CAD |
| China | 68 CNY |
| France | 9.99 EUR |
| Germany | 9.99 EUR |
| Italy | 9.99 EUR |
| Netherlands | 9.99 EUR |
| Portugal | 9.99 EUR |
| Spain | 9.99 EUR |
| UK | 9.99 GBP |
| India | 999 INR |
| Japan | 1500 JPY |
| Korea, Republic Of | 17000 KRW |
| Poland | 49.99 PLN |
| Russia | 899 RUB |
| Turkey | 499.99 TRY |
| USA | 9.99 USD |
| Ukraine | 11.99 USD |
