# RedX Construction Calculator — Feet & inch Fraction Math

> Free construction calculator for feet-inch-fraction math, framing, and building calculations. (iPhone/iPad app by RedX Technology Inc.)

- Source: https://appshunter.io/ios/app/redx-construction-calculator/id6792503463 (this page in markdown: same URL + `.md`)
- Developer: [RedX Technology Inc](https://appshunter.io/developer/835492291)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 19 MB
- Languages: American English
- Released: 2026-07-29
- Data updated: 2026-09-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/redx-construction-calculator/id6792503463/reviews.md

## What is RedX Construction Calculator?

The 100% FREE construction calculator. REDX CALC is the feet-inch-fraction calculator for framers, carpenters, contractors and builders: rafter, stair, roof pitch and framing math with no ads, no subscriptions and no in-app purchases.

Work the way you measure: add, cut and convert full feet-inch dimensions with fractions, and switch between imperial and metric in one tap.

FEET & INCHES MATH
• Add, subtract, multiply and divide feet-inch measurements with fractions
• Adjustable fraction precision
• Instant conversion between yards, feet, inches, meters, cm and mm
• Percent, square, square root and reciprocal functions
• Memory keys and automatic calculation history

RIGHT TRIANGLES & ROOFS
• Pitch, Rise, Run and Diagonal keys: enter what you know, tap to solve the rest
• Hip/Valley and Jack rafter solvers
• Miter angles for trim and framing

STAIRS, ARCS & CIRCLES
• Stair layouts: risers, treads, stringers and the stairwell opening
• Arc solver for arched openings
• Circle facts, columns and cone volumes

DIMENSIONS
• Length, Width and Height registers for areas and volumes
• Unit-aware math keeps your results in the units you build with

KNOW-HOW BUILT IN
• Step-by-step guides for the basics, roofs, stairs, circles, conversions and more
• Light and dark mode

100% FREE. FOREVER.
No ads. No in-app purchases. No subscriptions. Every feature included.

Part of the RedX Apps family: RedX Decks, RedX Roof, RedX Walls and RedX Stairs.

Terms of Use
https://www.redxapps.com/terms-of-service

## Key features

- Feet-inch-fraction math
- Roof pitch and rafter solvers
- Stair layout calculations
- Unit conversion (imperial/metric)
- Area and volume calculations
- Step-by-step guides

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/redx-construction-calculator/id6792503463/reviews.md

### 5/5 — very good app

*2026-08-22*

very sinple to use and i like the color

### 5/5 — Great

*2026-08-05*

Good

## Frequently asked questions about RedX Construction Calculator

### What is RedX Construction Calculator?

RedX Construction Calculator is a free utility app designed for construction professionals. It offers advanced features for calculations involving feet, inches, and fractions, along with specialized tools for framing, roofing, and stair construction.

### Is RedX Construction Calculator free to use?

Yes, RedX Construction Calculator is 100% free, forever. It explicitly states there are no ads, no subscriptions, and no in-app purchases, with every feature included.

### What types of construction math can RedX Construction Calculator handle?

It handles feet-inch-fraction addition, subtraction, multiplication, and division. It also includes functions for right triangles, roofs (pitch, rise, run, diagonal, rafters), stairs, arcs, and circles.

### Does RedX Construction Calculator support both imperial and metric units?

Yes, the app allows for instant conversion between imperial units (yards, feet, inches) and metric units (meters, cm, mm) with a single tap.

### Can I get help with specific construction tasks using RedX Construction Calculator?

Absolutely. The app includes built-in 'know-how' with step-by-step guides for basic calculations, roofs, stairs, circles, and conversions, making complex tasks more manageable.

### What devices is RedX Construction Calculator available on?

RedX Construction Calculator is available on iPhone and iPad devices. It is designed to work across these Apple platforms.

### How often is RedX Construction Calculator updated?

The app was last updated on July 29, 2026, with version 1.0. This indicates it is a recent release, and users can expect future updates based on developer activity.

### Does RedX Construction Calculator have ads?

No, RedX Construction Calculator is advertised as having no ads. The developers explicitly state it is a 100% FREE app with no advertisements.

## Version history (last 1 release)

### 1.0 — 2026-07-29

No release notes.

## More apps by RedX Technology Inc

- [Welland Canal Bridge Status](https://appshunter.io/ios/app/welland-canal-bridge-status/id1513050020)
- [RedX Roof - Rafter Calculator](https://appshunter.io/ios/app/redx-roof-rafter-calculator/id1519896740)
- [Triton - Dive Tracker](https://appshunter.io/ios/app/triton-dive-tracker/id1533556089)
- [RedX Walls - Design & Build](https://appshunter.io/ios/app/redx-walls-design-and-build/id1554953550)
- [Welland Canal - Bridge Status](https://appshunter.io/ios/app/welland-canal-bridge-status/id1572213857)
- [RedX Stairs - 3D Calculator](https://appshunter.io/ios/app/redx-stairs-3d-calculator/id1589688170)

All apps by RedX Technology Inc: https://appshunter.io/developer/835492291

## Related topics

[construction calculator free](https://appshunter.io/ios/topics/construction-calculator-free) · [inch calculator construction](https://appshunter.io/ios/topics/inch-calculator-construction) · [construction calculator free math](https://appshunter.io/ios/topics/construction-calculator-free-math)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*