# Structer vs Square Tube Layout Calculator

The clearest difference is in-app purchases: Structer at none against Square Tube Layout Calculator's 2. Square Tube Layout Calculator's advantage is iOS requirement (17.0 vs 26.1). On price, ads and device support there is nothing between them.

Both are free to download. Square Tube Layout Calculator sells 2 in-app purchases, starting at $3.99 per month. Structer asks for nothing beyond the download.

## The numbers

| Metric | Structer | Square Tube Layout Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/structer/id6757365251/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | Free | — |
| Size | 6 MB | 10 MB |
| Requires iOS | 26.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RUI CHEN](https://appshunter.io/developer/1866395822) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## What reviewers say

### Structer

[App page](https://appshunter.io/ios/app/structer/id6757365251)

This structural analysis toolbox offers clear calculations and visualizations for aerospace engineering students and practicing engineers. It covers common problems in aircraft structural analysis and sizing, suitable for educational use and preliminary analysis.

**Highlights:** Section Properties & Stress calculations, Beam Internal Loads analysis, 2D Stress Mohr's Circle, Elastic Column Buckling (Euler), Stress due to Axial and Bending Loads

**Features:** macOS Compatibility

**In-app purchases:** none


### Square Tube Layout Calculator

[App page](https://appshunter.io/ios/app/square-tube-layout-calculator/id6794666472)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADS | $3.99 | per month |
| Full access | $14.99 | one-time |


## Frequently asked questions

### Is Structer free?

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

### Is Square Tube Layout Calculator free?

Square Tube Layout Calculator is free to download, with in-app purchases available.

### Do Structer or Square Tube Layout Calculator have ads?

Neither Structer nor Square Tube Layout Calculator shows ads.

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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.*