# Span Calc vs WeldCalcs

The clearest difference is price: Span Calc at Free against WeldCalcs's $1.99. Span Calc also leads on update cadence (every 10 days vs every 15 months) and ratings volume (15 vs 1). WeldCalcs's advantage is rating (5.0 vs 2.9). On ads, in-app purchases and device support there is nothing between them.

Span Calc is free to download; WeldCalcs costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WeldCalcs 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 1, so its average is the more settled of the two.

Span Calc ships an update every 10 days, WeldCalcs every 15 months. The most recent releases landed on August 13, 2026 and June 27, 2026 respectively.

## The numbers

| Metric | Span Calc | WeldCalcs |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.9 (15 ratings)](https://appshunter.io/ios/app/span-calc/id380481343/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/weldcalcs/id1422441562/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 29.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 15 months |
| Monetization | **Free** | Paid |
| Size | 168 MB | 17 MB |
| Requires iOS | **14.2** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [American Wood Council](https://appshunter.io/developer/380481346) | [Glendale Coding Labs, Inc](https://appshunter.io/developer/1266859626) |

## 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


### WeldCalcs

[App page](https://appshunter.io/ios/app/weldcalcs/id1422441562)

This engineering calculator app assists in the preliminary sizing of fillet welds for steel construction. It computes section properties for typical welding patterns, allowing users to input dimensions and applied forces/moments to determine the maximum resisting resultant force and initial weld size.

**Highlights:** Fillet weld design sizing, Section property calculation, Elastic Method calculations, Input dimensions and forces, Determines maximum resisting force, Reference equations available

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Span Calc free?

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

### Is WeldCalcs free?

WeldCalcs costs $1.99, with no in-app purchases.

### Which has better reviews, Span Calc or WeldCalcs?

WeldCalcs is rated higher. Span Calc averages 2.9 out of 5 from 15 ratings, while WeldCalcs averages 5.0 from 1 ratings.

### Do Span Calc or WeldCalcs have ads?

Neither Span Calc nor WeldCalcs shows ads.

### Which is updated more often, Span Calc or WeldCalcs?

Span Calc ships an update every 10 days, and WeldCalcs every 15 months. Most recently, Span Calc was updated on August 13, 2026 and WeldCalcs on June 27, 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.*