# Structural Engineering lite vs SSI Steel Design

The clearest difference is review sentiment: Structural Engineering lite at 60% against SSI Steel Design's 0%. Structural Engineering lite also leads on rating (4.2 vs 3.0) and ratings volume (19 vs 1). SSI Steel Design's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Structural Engineering lite sells 1 one-off in-app purchase and SSI Steel Design sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Structural Engineering lite holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: Structural Engineering lite has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Structural Engineering lite's written reviews are positive against 0% of SSI Steel Design's.

Structural Engineering lite ships an update every 6 months, SSI Steel Design every 3 months. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Structural Engineering lite | SSI Steel Design |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (19 ratings)](https://appshunter.io/ios/app/structural-engineering-lite/id638690043/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/ssi-steel-design/id1474838160/reviews) |
| Number of ratings | **19** | 1 |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 23 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Sahaviriya Steel Industries Public Company Limited](https://appshunter.io/developer/1474838159) |

## What reviewers say

### Structural Engineering lite

[App page](https://appshunter.io/ios/app/structural-engineering-lite/id638690043)

This app provides engineers with essential structural formulas and calculations for civil construction projects. It offers instant results, demand/capacity checks, and a built-in database of materials and sections, all accessible on mobile devices.

**Highlights:** 59 structural formulas (AISC/ACI), Instant demand/capacity checks, Built-in AISC section database, Material and code references, USCS & SI unit support, Pass/Fail visual indicator

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Structural Engineering Calc. | $5.99 | one-time |


### SSI Steel Design

[App page](https://appshunter.io/ios/app/ssi-steel-design/id1474838160)

Easily determine the capacity of structural steel beams and columns. Get detailed calculation sheets to verify your work, designed according to AISC 360-16 standards. Features intuitive touch-based interaction and built-in material databases.

**Highlights:** Determine steel beam and column capacity, Generate detailed calculation sheets, Intuitive touch-based design input, Supports AISC 360-16 standards, Built-in material databases, Saves calculation sheets as JPG

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Report Sheet | $12.99 | one-time |


## Frequently asked questions

### Is Structural Engineering lite free?

Structural Engineering lite is free to download, with in-app purchases available.

### Is SSI Steel Design free?

SSI Steel Design is free to download, with in-app purchases available.

### Which has better reviews, Structural Engineering lite or SSI Steel Design?

Structural Engineering lite is rated higher. Structural Engineering lite averages 4.2 out of 5 from 19 ratings, while SSI Steel Design averages 3.0 from 1 ratings.

### Do Structural Engineering lite or SSI Steel Design have ads?

Structural Engineering lite shows ads; SSI Steel Design does not.

### Which is updated more often, Structural Engineering lite or SSI Steel Design?

Structural Engineering lite ships an update every 6 months, and SSI Steel Design every 3 months. Most recently, Structural Engineering lite was updated on September 18, 2026 and SSI Steel Design on September 10, 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.*