# Span Calc vs Construction Calc Pro Lite

The clearest difference is rating: Construction Calc Pro Lite at 5.0 against Span Calc's 2.9. Span Calc's advantage is ads (none vs shown) and update cadence (every 10 days vs every 5 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Construction Calc Pro Lite holds the better App Store score, 5.0 against 2.9. That said, the two scores are not equally well evidenced: Span Calc has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 30% of Span Calc's written reviews are positive against 10% of Construction Calc Pro Lite's, so the app with the better star average is not the one people write more warmly about.

Span Calc ships an update every 10 days, Construction Calc Pro Lite every 5 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Span Calc | Construction Calc Pro Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (15 ratings)](https://appshunter.io/ios/app/span-calc/id380481343/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/construction-calc-pro-lite/id942135958/reviews)** |
| Number of ratings | **15** | 2 |
| Positive reviews | **29.6% of reviews** | 9.5% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 5 months |
| Monetization | Free | Free |
| Size | 168 MB | 89 MB |
| Requires iOS | **14.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [American Wood Council](https://appshunter.io/developer/380481346) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## 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


### Construction Calc Pro Lite

[App page](https://appshunter.io/ios/app/construction-calc-pro-lite/id942135958)

This calculator app is designed for construction professionals, offering specialized functions for measurements in feet, inches, and fractional inches. It includes modules for material estimates, conversions, area and volume calculations, trigonometry, and stair design, transforming your device into a construction computer.

**Highlights:** Feet, inches, and fractional inch measurements, Material estimation modules, Area and volume calculations, Trigonometry and triangle solver, Stair and crown moulding calculators, Fraction reduction and conversion, Estimate transfer and email

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

**In-app purchases:** none


## Frequently asked questions

### Is Span Calc free?

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

### Is Construction Calc Pro Lite free?

Construction Calc Pro Lite is free to download, with no in-app purchases.

### Which has better reviews, Span Calc or Construction Calc Pro Lite?

Construction Calc Pro Lite is rated higher. Span Calc averages 2.9 out of 5 from 15 ratings, while Construction Calc Pro Lite averages 5.0 from 2 ratings.

### Do Span Calc or Construction Calc Pro Lite have ads?

Construction Calc Pro Lite shows ads; Span Calc does not.

### Which is updated more often, Span Calc or Construction Calc Pro Lite?

Span Calc ships an update every 10 days, and Construction Calc Pro Lite every 5 months. Most recently, Span Calc was updated on October 12, 2026 and Construction Calc Pro Lite on October 5, 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.*