# CASA Space Frame 3D vs SCALE Structural Calculations

The clearest difference is price: SCALE Structural Calculations at Free against CASA Space Frame 3D's $299.99. SCALE Structural Calculations also leads on update cadence (monthly vs every 3 months) and iOS requirement (12.0 vs 14.1). CASA Space Frame 3D's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On review sentiment and ads there is nothing between them.

SCALE Structural Calculations is free to download; CASA Space Frame 3D costs $299.99 up front. SCALE Structural Calculations sells 2 in-app purchases, starting at $50.99 per month. CASA Space Frame 3D asks for nothing beyond the download.

CASA Space Frame 3D ships an update every 3 months, SCALE Structural Calculations monthly. The most recent releases landed on June 9, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | CASA Space Frame 3D | SCALE Structural Calculations |
| --- | --- | --- |
| Price | $299.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/casa-space-frame-3d/id371089612/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 82 MB |
| Requires iOS | 14.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Intesym Ltd.](https://appshunter.io/developer/361434891) | [Fitzroy Systems Limited](https://appshunter.io/developer/1225174135) |

## What reviewers say

### CASA Space Frame 3D

[App page](https://appshunter.io/ios/app/casa-space-frame-3d/id371089612)

This app enables structural engineers to perform static and dynamic elastic analysis of 3D space-frames. It offers quick and precise modeling with graphical interaction, providing numerical and graphical results for deflections, forces, and mode shapes.

**Highlights:** Linear static analysis, Non-linear static analysis (P-Delta), Dynamic analysis (natural modes, footfall), Extensive section and material libraries, Graphical interactive results, Metric & imperial units

**In-app purchases:** none


### SCALE Structural Calculations

[App page](https://appshunter.io/ios/app/scale-structural-calculations/id1225174136)

This app provides structural engineers with tools to perform calculations and generate component details for various structural elements. It offers a comprehensive library of proformas and expert systems for reinforced concrete, steelwork, timber, and masonry detailing, supporting both Eurocodes and British Standards.

**Highlights:** Structural calculations for beams, columns, slabs, Component detailing for steel, concrete, masonry, timber, Library of over 600 proforma calculations, Expert systems for detailing (LUCID, SPADE), 2D/3D elastic analysis (NL-STRESS), PDF and DOCX output for submission, Support for Eurocodes and British Standards

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full subscription to SCALE | $50.99 | per month |
| Full subscription to SCALE | $299.99 | per year |


## Frequently asked questions

### Is CASA Space Frame 3D free?

CASA Space Frame 3D costs $299.99, with no in-app purchases.

### Is SCALE Structural Calculations free?

SCALE Structural Calculations is free to download, with in-app purchases available.

### Do CASA Space Frame 3D or SCALE Structural Calculations have ads?

Neither CASA Space Frame 3D nor SCALE Structural Calculations shows ads.

### Which is updated more often, CASA Space Frame 3D or SCALE Structural Calculations?

CASA Space Frame 3D ships an update every 3 months, and SCALE Structural Calculations monthly. Most recently, CASA Space Frame 3D was updated on June 9, 2026 and SCALE Structural Calculations on June 1, 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.*