# CASA Space Frame 3D vs Construction Calculator A1

The clearest difference is price: Construction Calculator A1 at Free against CASA Space Frame 3D's $299.99. Construction Calculator A1 also leads on rating (4.7 vs 4.0) and ratings volume (29 vs 1). CASA Space Frame 3D's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Construction Calculator A1 is free to download; CASA Space Frame 3D costs $299.99 up front. Construction Calculator A1 sells 6 in-app purchases, starting at $2.99 per month. CASA Space Frame 3D asks for nothing beyond the download.

Construction Calculator A1 holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Construction Calculator A1 has 29 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of CASA Space Frame 3D's written reviews are positive against 67% of Construction Calculator A1's, so the app with the better star average is not the one people write more warmly about.

CASA Space Frame 3D ships an update every 3 months, Construction Calculator A1 monthly. The most recent releases landed on October 23, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CASA Space Frame 3D | Construction Calculator A1 |
| --- | --- | --- |
| Price | $299.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/casa-space-frame-3d/id371089612/reviews) | **[4.7 (29 ratings)](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews)** |
| Number of ratings | 1 | **29** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 182 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Intesym Ltd.](https://appshunter.io/developer/361434891) | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) |

## 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


### Construction Calculator A1

[App page](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051)

This comprehensive tool offers over 500 construction calculators, from basic material quantities to complex bills of quantities. It generates automatic drawings, manages material prices, and provides learning resources for civil engineers and contractors.

**Highlights:** 500+ construction calculators, Concrete, rebar, and steel calculations, Feet-inch calculator, Bill of Quantities (BOQ), Automatic drawings, Material price library, Unit converter

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro access monthly subscription | $2.99 | per month |
| Pro access yearly subscription | $24.99 | per year |
| 100 AI Credits | $0.99 | one-time |
| 500 AI credits | $3.99 | one-time |
| 500 AI credits | $9.99 | one-time |
| Lifetime Access | $39.99 | one-time |


## Frequently asked questions

### Is CASA Space Frame 3D free?

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

### Is Construction Calculator A1 free?

Construction Calculator A1 is free to download, with in-app purchases available.

### Which has better reviews, CASA Space Frame 3D or Construction Calculator A1?

Construction Calculator A1 is rated higher. CASA Space Frame 3D averages 4.0 out of 5 from 1 ratings, while Construction Calculator A1 averages 4.7 from 29 ratings.

### Do CASA Space Frame 3D or Construction Calculator A1 have ads?

Construction Calculator A1 shows ads; CASA Space Frame 3D does not.

### Which is updated more often, CASA Space Frame 3D or Construction Calculator A1?

CASA Space Frame 3D ships an update every 3 months, and Construction Calculator A1 monthly. Most recently, CASA Space Frame 3D was updated on October 23, 2026 and Construction Calculator A1 on November 3, 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.*