RedX Stairs - 3D Calculator 4+

Design & Calculate Stairs

RedX Technology Inc

Designed for iPad

    • 4.4 • 184 Ratings
    • Free
    • Offers In-App Purchases



Discover the next level of stair construction with the RedX Stair App, now fully enhanced with stunning 3D capabilities. This app is your essential companion for efficient and precise stair measurement and visualization. Featuring a wide selection of calculators for every type of stair configuration including Straight Stairs , L-Shaped Stairs, U-Shaped Stairs, Spiral Stairs, Winder Stairs, Corner Deck Stairs and more, it effortlessly simplifies the most complex stair calculations. Whether you're working in CM, MM, Feet, or Inches, this app ensures versatile and accurate measurements for professionals and DIY enthusiasts alike.

Key Upgrades and Features:

Advanced 3D visualization for all stair types, offering a dynamic and immersive design experience
Comprehensive suite of calculators for Straight, L, U, Spiral Stairs, Winders, and more, accommodating any project requirement
Interactive, to-scale stair plans with precise measurements, enhancing design accuracy and efficiency
Multifaceted measurement support in CM, MM, Feet, and Inches for global applicability
Efficient project management options: Print, Share, Save to Photos, or Store designs in-app for future reference
Detailed plans and measurements for common stair builds, including stringer details for unparalleled clarity
Specialized tools for designing Spiral, Curved, and Winder stairs with customizable specifications
Exclusive Features for Enhanced Design:

Enter key details like Total Rise, Stringer, and Tread information to instantly generate detailed, to-scale stair plans
Customize your stair designs with adjustable Stair Angles, Step Numbers, and more for perfect fit and function
For Spiral and Curved Stairs, specify Total Rise, Rotation, and Radius to receive plans with Inner and Outer Stringer measurements
Unique Winder Stairs feature for detailed planning of each tread, ensuring precise execution of complex designs
Specialized calculators for Hip Stringers and Stairs with Landings, offering comprehensive design solutions
The RedX Stair App is the ultimate tool for transforming your stair design process with the power of 3D visualization. Download now to experience unparalleled precision and creativity in stair design. Stay ahead with continuous updates and new features, elevating your design capabilities to new heights.

Terms Of Use

In-app purchases available for premium features. Subscription options include a monthly or yearly Stairs App Pro Subscription, with payment charged to your iTunes account and easy management of auto-renewal settings in the App Store. Pricing details and subscription terms available within the app.

What’s New

Version 3.0.5

We are constantly working on improving the app. This update has small improvements and bug fixes. Enjoy the app!

Ratings and Reviews

4.4 out of 5
184 Ratings

184 Ratings

rockin rap pop master ,

Fantastic app for stairs

What a great app. It helped me build a set of 90 degree stairs. Entering the height I was able to adjust landing position, step height, tread width; run etc until I got the prefect design for my application. So many variables to accommodate your individual needs

Easy to print out the designs for use on the job sight. The cut list and layouts were super easy to understand and apply to the 2x12 stringers so they came out perfect.

I look forward to using the deck app when I need to build my deck

Cabin builders ,

Stair app

App was very helpful designing my stairs with limited space available.

Thank you.

AAF22721 ,

Seems to be a decent app

The apps for walls and roofs seem to be decent and helps speed most cases up but I really think if I paid for the walls app and roof app I should get the stairs app for free considering it cost less for all 3 in a bundle than I paid for 2 apps.


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App Privacy

The developer, RedX Technology Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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