---
title: "Construction calculator apps for iPhone compared"
description: "Construction Calculator by KLM Labs beside five popular feet-inch-fraction calculator apps: price, free use, where each runs and sharing, with sources."
canonical: https://klmlabs.app/construction-calculator/alternatives/
updated: 2026-11-07
---

# Construction calculator apps for iPhone compared

Our app, Construction Calculator, beside five popular apps for feet, inch and fraction math on iPhone: what each costs, what you can do without paying, where it runs, whether it needs an account, whether it works offline and what you can share. Each app's facts come from its own App Store page or website, linked below, and the other apps win on several of them.

Every fact checked on November 7, 2026, on each app's App Store page or its own website (linked below).

## Price and what you can do without paying

Checked on November 7, 2026. Each fact links the page it comes from.

| App | Price | Without paying |
|---|---|---|
| [Construction Calculator by KLM Labs](https://klmlabs.app/construction-calculator/) (ours) | Free to download, with in-app purchases. Yearly US$9.99 a year (7-day free trial for eligible new subscribers), or Lifetime US$19.99 paid once ([facts page](https://klmlabs.app/construction-calculator/)) | Every feature, the calculator included, needs the free trial or a purchase ([facts page](https://klmlabs.app/construction-calculator/)) |
| [Construction Master Pro Calc](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446) | Free to download, with in-app purchases: 1 Month Full Access US$4.99, 1 Year Full Access US$39.99 ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)) | A 14-day trial, then a subscription ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)) |
| [Fraction Calculator Plus](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301) | Free to download, with in-app purchases, including Remove ads for US$3.99 ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)) | Not stated; a Remove ads purchase is listed ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)) |
| [Construction Master 5 Calc](https://apps.apple.com/us/app/construction-master-5-calc/id370412148) | Free to download, with in-app purchases: 1 Month Full Access US$3.99, 1 Year Full Access US$34.99 ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)) | A trial (its length isn't stated), then a subscription ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)) |
| [Feet & Inches Tape Calculator](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634) | Free to download, with one in-app purchase: Pro Features, US$2.99 ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)) | Not stated which features need Pro ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)) |
| [Builder's Helper MAX](https://apps.apple.com/us/app/builders-helper-max/id835030206) | Free to download, with in-app packs such as Pro Pack US$12.99, Pro Calculator US$4.99 and Construction Pack US$4.99 ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)) | Not stated on its App Store page ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)) |

## Where it runs, sign-up, offline and sharing

Checked on November 7, 2026. Each fact links the page it comes from.

| App | Runs on | Account | Offline | Sharing and export |
|---|---|---|---|---|
| [Construction Calculator by KLM Labs](https://klmlabs.app/construction-calculator/) (ours) | iPhone and iPad; No Android or web version ([facts page](https://klmlabs.app/construction-calculator/)) | No account or sign-up ([facts page](https://klmlabs.app/construction-calculator/)) | Works offline once the trial or a purchase is active; starting the trial, buying or restoring needs a connection ([facts page](https://klmlabs.app/construction-calculator/)) | Only the stair layout exports a PDF, and only on US Letter paper (no A4); A history tape saves every answer; tap a row to reuse its exact value, or copy and share it ([facts page](https://klmlabs.app/construction-calculator/)) |
| [Construction Master Pro Calc](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446) | iPhone, iPad, Mac (M-series chip) and Apple Vision; Android too ([calculated.com](https://www.calculated.com/products/construction-master-pro-app/)) | Not stated on its App Store page or site ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)) | Not stated on its App Store page or site ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)) | Save and share calculations and outputs, such as cut lists ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)) |
| [Fraction Calculator Plus](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301) | iPhone, iPad, Mac (M-series chip) and Apple Vision ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)) | Not stated on its App Store page or site ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)) | Not stated on its App Store page or site ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)) | Not stated on its App Store page ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)) |
| [Construction Master 5 Calc](https://apps.apple.com/us/app/construction-master-5-calc/id370412148) | iPhone, iPad, Mac (M-series chip) and Apple Vision; Android too ([calculated.com](https://www.calculated.com/products/construction-master-5-app/)) | Not stated on its App Store page or site ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)) | Not stated on its App Store page or site ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)) | Save or email calculations and outputs, such as cut lists ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)) |
| [Feet & Inches Tape Calculator](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634) | iPhone, iPad and Mac (M-series chip) ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)) | Not stated; its App Store privacy label says Data Not Collected ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)) | Not stated on its App Store page ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)) | Not stated on its App Store page ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)) |
| [Builder's Helper MAX](https://apps.apple.com/us/app/builders-helper-max/id835030206) | iPhone, iPad, Mac (M-series chip) and Apple Vision ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)) | Not stated on its App Store page ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)) | Not stated on its App Store page ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)) | Print, or email project data as a PDF ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)) |

## Where each app wins

### Construction Calculator by KLM Labs (ours)

- Add, subtract, multiply and divide feet, inches and fractions exactly (type 5' 7-3/8"), with %, x², √, π, brackets and memory keys ([facts page](https://klmlabs.app/construction-calculator/)).
- 11 tools: stairs, roof pitch, hip and valley rafters, jack rafters, rake walls, miters (flat and crown), concrete in cubic yards and bags, board feet, circles and arcs, cost per unit, and a unit converter ([facts page](https://klmlabs.app/construction-calculator/)).
- In English and Spanish (Mexican Spanish), following your device's language ([facts page](https://klmlabs.app/construction-calculator/)).
- A Home Screen widget shows your last answer; the medium size adds shortcuts to Stairs, Concrete, Roof pitch and the tool list ([facts page](https://klmlabs.app/construction-calculator/)).

### Construction Master Pro Calc

- Ask CMPro: step-by-step guidance for calculations, powered by AI ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)).
- Measurements sent straight from a Bosch GLM laser measure ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)).
- Project notes with voice-to-text, folders and attachments, shared with your crew ([App Store](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446)).
- An Android version ([calculated.com](https://www.calculated.com/products/construction-master-pro-app/)).

### Fraction Calculator Plus

- A general fraction calculator for any use, with every result also shown as a decimal ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)).
- A photo calculator for fractions (listed as an in-app purchase) ([App Store](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301)).

### Construction Master 5 Calc

- Searchable help, press-and-hold help on each function, and tutorial videos ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)).
- Calculations and cut lists sent by email ([App Store](https://apps.apple.com/us/app/construction-master-5-calc/id370412148)).
- An Android version ([calculated.com](https://www.calculated.com/products/construction-master-5-app/)).

### Feet & Inches Tape Calculator

- The answer shown on a picture of a tape measure ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)).
- Its App Store privacy label says the developer collects no data ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)).
- One purchase of US$2.99 for its Pro features ([App Store](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634)).

### Builder's Helper MAX

- Projects that keep documents and photos with the numbers ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)).
- Graphical quick-jobs for rafters, stairs, concrete, drywall and more ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)).
- Inch fractions down to 1/128 ([App Store](https://apps.apple.com/us/app/builders-helper-max/id835030206)).

## What Construction Calculator doesn't do

Every feature, the calculator included, needs the free trial or a purchase. It has no AR or laser measuring (you type the measurements in), no saved projects or jobs, and only the stair layout exports a PDF. There's no Android or web version. If you need a laser measure feeding the numbers, project notes for a crew, or an Android phone, the other apps here have those.

## Which kind of app fits

- **You want to measure with a laser and send it straight to the math:** Construction Master Pro works with Bosch GLM laser measures.
- **You want projects with notes, documents or photos:** Construction Master Pro and Builder's Helper MAX keep projects.
- **You only need fractions, for building or anything else:** Fraction Calculator Plus is a general fraction calculator.
- **You want exact feet-inch-fraction math and the tools for stairs, roofs, rafters, concrete and board feet in one app, in English or Spanish:** that's what Construction Calculator is for, with a one-time Lifetime purchase as well as a yearly plan.

## How we picked these apps

We searched the US App Store for construction calculator, feet inch calculator, fraction calculator construction and construction master on the day we checked, and picked five of the apps with the most ratings shown that do feet, inch and fraction math for building work. Two come from the same developer: Construction Master Pro and Construction Master 5 are sold as separate apps.

| App | Developer | App Store rating as shown on November 7, 2026 | Ratings shown |
|---|---|---|---|
| [Construction Master Pro Calc](https://apps.apple.com/us/app/construction-master-pro-calc/id370406446) | Calculated Industries, Inc. | 4.8 out of 5 | 41K |
| [Fraction Calculator Plus](https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301) | DigitAlchemy LLC | 4.9 out of 5 | 23K |
| [Construction Master 5 Calc](https://apps.apple.com/us/app/construction-master-5-calc/id370412148) | Calculated Industries, Inc. | 4.8 out of 5 | 13K |
| [Feet & Inches Tape Calculator](https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634) | Tue Nguyen Minh | 4.4 out of 5 | 9.3K |
| [Builder's Helper MAX](https://apps.apple.com/us/app/builders-helper-max/id835030206) | My Pie Interactive | 4.7 out of 5 | 1.8K |

Construction Calculator is not in this table: it is new, with too few ratings to show.

## Where each fact comes from

Our app's row comes from its Construction Calculator facts page (https://klmlabs.app/construction-calculator/), checked against the App Store. Each other app's row comes from these pages, read on November 7, 2026:

- Construction Master Pro Calc: https://apps.apple.com/us/app/construction-master-pro-calc/id370406446, https://www.calculated.com/products/construction-master-pro-app/
- Fraction Calculator Plus: https://apps.apple.com/us/app/fraction-calculator-plus-1/id580778301
- Construction Master 5 Calc: https://apps.apple.com/us/app/construction-master-5-calc/id370412148, https://www.calculated.com/products/construction-master-5-app/
- Feet & Inches Tape Calculator: https://apps.apple.com/us/app/feet-inches-tape-calculator/id1434258634
- Builder's Helper MAX: https://apps.apple.com/us/app/builders-helper-max/id835030206

Apps change their prices and features often. If something here is out of date, email support@klmlabs.app and we'll check it again.

## Try Construction Calculator on the App Store

- Feet, inches and fractions done exactly
- 11 tools, from stairs and rafters to concrete
- No ads and no sign-up

Download Construction Calculator on the App Store: https://apps.apple.com/us/app/fraction-feet-inch-calculator/id6816445977

Free to download, with in-app purchases. Every feature, the calculator included, needs the free trial or a purchase: Yearly US$9.99 a year with a 7-day free trial for eligible new subscribers, or Lifetime US$19.99 paid once (US prices). iPhone and iPad, iOS 17.0 or later. All the facts: https://klmlabs.app/construction-calculator/

## More about Construction Calculator

- [Construction Calculator by KLM Labs](https://klmlabs.app/construction-calculator/): Facts about Construction Calculator by KLM Labs, the feet-inch-fraction calculator for iPhone and iPad: what it does and doesn't, and its prices.
- [Construction charts and guides](https://klmlabs.app/construction-calculator/guides/): Seven printable construction charts: fraction to decimal, roof pitch, board feet, concrete bags, crown molding angles, stair rise and run, and square feet.

## Sources

1. [Fraction Feet Inch Calculator on the App Store (our app's listing)](https://apps.apple.com/us/app/fraction-feet-inch-calculator/id6816445977)
2. [Apple's public app lookup for Construction Calculator (the facts our checks compare)](https://itunes.apple.com/lookup?id=6816445977&country=us)

Page last updated November 7, 2026.