# Span Calc vs Measure Master Pro Calculator

The clearest difference is review sentiment: Measure Master Pro Calculator at 81% against Span Calc's 30%. Measure Master Pro Calculator also leads on rating (4.8 vs 3.0) and ratings volume (4.4K vs 16). Span Calc's advantage is in-app purchases (none vs 2) and update cadence (every 10 days vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Measure Master Pro Calculator sells 2 in-app purchases, starting at $1.99 per month. Span Calc asks for nothing beyond the download.

Measure Master Pro Calculator holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Measure Master Pro Calculator has 4.4K ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 30% of Span Calc's written reviews are positive against 81% of Measure Master Pro Calculator's.

Span Calc ships an update every 10 days, Measure Master Pro Calculator every 7 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Span Calc | Measure Master Pro Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (16 ratings)](https://appshunter.io/ios/app/span-calc/id380481343/reviews) | **[4.8 (4.4K ratings)](https://appshunter.io/ios/app/measure-master-pro-calculator/id390273304/reviews)** |
| Number of ratings | 16 | **4.4K** |
| Positive reviews | 29.6% of reviews | **80.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 168 MB | 57 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [American Wood Council](https://appshunter.io/developer/380481346) | [Calculated Industries](https://appshunter.io/developer/370406449) |

## What reviewers say

### Span Calc

[App page](https://appshunter.io/ios/app/span-calc/id380481343)

Calculate maximum horizontal spans for wood joists and rafters using various lumber species and grades. Compares multiple options for common loading conditions based on NDS® standards.

**Highlights:** Calculates joist and rafter spans, Supports all softwood and hardwood lumber, Uses 2021 NDS® for Wood Construction, Compares multiple species and grades, Handles common loading conditions

**Features:** macOS Compatibility

**In-app purchases:** none


### Measure Master Pro Calculator

[App page](https://appshunter.io/ios/app/measure-master-pro-calculator/id390273304)

This app provides comprehensive U.S. and metric unit conversions and advanced calculations for design and building projects. It offers solutions for geometry, weight, and dimensional analysis, with a user-friendly interface and built-in help.

**Highlights:** Multi-dimensional unit conversion (U.S. & metric), Advanced weight calculations, Geometry solutions (circle area, circumference), Comprehensive dimensional analysis (linear, area, volume), Cost per Unit function, Paperless tape for past calculations, Board Feet calculation

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $1.99 | per month |
| 1 Year Full Access | $19.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient and always available
- 💯 Accurate and reliable
- 🔧 Essential tool for construction professionals
- ⚡ Fast and responsive

**What reviewers complain about**

- 🔒 Subscription model instead of one-time purchase
- 🔍 Missing some key features like stair and diagonal calculations
- 📱 UI could be improved, especially on iPad
- 🐛 Occasional bugs and crashes reported

**Reported bugs**

- Unable to download on iPhone after previous iPad purchase
- Free trial screen gets stuck, preventing full app usage

**Requested features**

- Bring back the S.F. button
- Add landscape mode support for iPad
- Improve handling of large numbers
- Integrate more advanced construction-specific functions


## Frequently asked questions

### Is Span Calc free?

Span Calc is free to download, with no in-app purchases.

### Is Measure Master Pro Calculator free?

Measure Master Pro Calculator is free to download, with in-app purchases available.

### Which has better reviews, Span Calc or Measure Master Pro Calculator?

Measure Master Pro Calculator is rated higher. Span Calc averages 3.0 out of 5 from 16 ratings, while Measure Master Pro Calculator averages 4.8 from 4.4K ratings.

### Do Span Calc or Measure Master Pro Calculator have ads?

Neither Span Calc nor Measure Master Pro Calculator shows ads.

### Which is updated more often, Span Calc or Measure Master Pro Calculator?

Span Calc ships an update every 10 days, and Measure Master Pro Calculator every 7 months. Most recently, Span Calc was updated on November 1, 2026 and Measure Master Pro Calculator on November 4, 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.*