# Span Calc vs Decking calculator, material

The clearest difference is rating: Decking calculator, material at 4.5 against Span Calc's 2.9. Decking calculator, material also leads on ratings volume (175 vs 15). Span Calc's advantage is in-app purchases (none vs 1) and update cadence (every 10 days vs every 6 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Decking calculator, material sells 1 one-off in-app purchase. Span Calc asks for nothing beyond the download.

Decking calculator, material holds the better App Store score, 4.5 against 2.9. That said, the two scores are not equally well evidenced: Decking calculator, material has 175 ratings behind it against 15, 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 33% of Decking calculator, material's.

Span Calc ships an update every 10 days, Decking calculator, material every 6 months. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Span Calc | Decking calculator, material |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (15 ratings)](https://appshunter.io/ios/app/span-calc/id380481343/reviews) | **[4.5 (175 ratings)](https://appshunter.io/ios/app/decking-calculator-material/id1516587759/reviews)** |
| Number of ratings | 15 | **175** |
| Positive reviews | 29.6% of reviews | **33.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 168 MB | 1 MB |
| Requires iOS | 14.2 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [American Wood Council](https://appshunter.io/developer/380481346) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## 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


### Decking calculator, material

[App page](https://appshunter.io/ios/app/decking-calculator-material/id1516587759)

This app helps you estimate the materials and cost for your decking project. It calculates the number of boards, screws, and hidden fasteners required, providing a total cost estimate for deck flooring.

**Highlights:** Calculate decking boards needed, Estimate fasteners (screws/hidden clips), Calculate total material cost, Focuses on deck flooring, Project material estimation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is Span Calc free?

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

### Is Decking calculator, material free?

Decking calculator, material is free to download, with in-app purchases available.

### Which has better reviews, Span Calc or Decking calculator, material?

Decking calculator, material is rated higher. Span Calc averages 2.9 out of 5 from 15 ratings, while Decking calculator, material averages 4.5 from 175 ratings.

### Do Span Calc or Decking calculator, material have ads?

Neither Span Calc nor Decking calculator, material shows ads.

### Which is updated more often, Span Calc or Decking calculator, material?

Span Calc ships an update every 10 days, and Decking calculator, material every 6 months. Most recently, Span Calc was updated on October 12, 2026 and Decking calculator, material on September 30, 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.*