# Construction Master Pro Calc vs BuilderFax By Lumber

The clearest difference is in-app purchases: BuilderFax By Lumber at none against Construction Master Pro Calc's 20. BuilderFax By Lumber also leads on update cadence (every 9 days vs every 3 weeks). Construction Master Pro Calc's advantage is ratings volume (40K vs 7) and chart position (#41 vs unranked). On price, rating, ads and device support there is nothing between them.

Both are free to download. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. BuilderFax By Lumber asks for nothing beyond the download.

BuilderFax By Lumber holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 7, so its average is the more settled of the two.

Construction Master Pro Calc ships an update every 3 weeks, BuilderFax By Lumber every 9 days. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | BuilderFax By Lumber |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/builderfax-by-lumber/id6754037484/reviews)** |
| Number of ratings | **40K** | 7 |
| Positive reviews | 60.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#41** | — |
| Size | 111 MB | 63 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Lumberfi Inc](https://appshunter.io/developer/1714403069) |

## What reviewers say

### Construction Master Pro Calc

[App page](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446)

**Currently charting:** #41 Top Grossing · Utilities (US App Store)

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

**Highlights:** Dimensional math and conversions, Right angle and rafter calculations, Area and volume solutions, Full trigonometric functions, Built-in user's guide and help, Save and share calculations, Project notes and attachments

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $3.69 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| CMPro Full Access | $9.99 | per year |
| 6 Months Full Access | $19.99 | per 6 months |
| 1 Year Full Access | $19.99 | per year |
| 1 Year Full Access | $29.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🚀 Convenient and always available
- ⚙️ Comprehensive construction calculations
- 💪 Industry-standard tool
- 🔍 Accurate and reliable
- 📱 Integrates well with mobile devices

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔒 Locks data behind subscription
- 🔄 Forced to re-purchase after device changes
- 🔍 Lacks full metric support
- 🔧 Occasional UI/UX issues

**Reported bugs**

- Crashes or freezes on certain devices
- Calculation errors in some scenarios
- Inconsistent behavior after updates

**Requested features**

- Add metric unit support
- Offer one-time purchase option
- Improve backup and data transfer
- Add more customization options
- Enhance overall user experience


### BuilderFax By Lumber

[App page](https://appshunter.io/ios/app/builderfax-by-lumber/id6754037484)

Securely store, manage, and share your professional certifications and licenses. Upload documents, categorize them for easy access, and instantly share verified credentials via QR code or SMS link for on-site proof.

**Highlights:** Add and manage certifications, Categorize professional documents, Share verified credentials instantly, QR code and SMS link sharing, Secure verification page

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Construction Master Pro Calc free?

Construction Master Pro Calc is free to download, with in-app purchases available.

### Is BuilderFax By Lumber free?

BuilderFax By Lumber is free to download, with no in-app purchases.

### Which has better reviews, Construction Master Pro Calc or BuilderFax By Lumber?

BuilderFax By Lumber is rated higher. Construction Master Pro Calc averages 4.8 out of 5 from 40K ratings, while BuilderFax By Lumber averages 5.0 from 7 ratings.

### Do Construction Master Pro Calc or BuilderFax By Lumber have ads?

Neither Construction Master Pro Calc nor BuilderFax By Lumber shows ads.

### Which is updated more often, Construction Master Pro Calc or BuilderFax By Lumber?

Construction Master Pro Calc ships an update every 3 weeks, and BuilderFax By Lumber every 9 days. Most recently, Construction Master Pro Calc was updated on October 22, 2026 and BuilderFax By Lumber on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*