# Structural Engineering lite vs CSiSteel

The clearest difference is rating: CSiSteel at 5.0 against Structural Engineering lite's 4.2. CSiSteel also leads on review sentiment (100% vs 60%) and in-app purchases (none vs 1). On price, ratings volume and device support there is nothing between them.

Both are free to download. Structural Engineering lite sells 1 one-off in-app purchase. CSiSteel asks for nothing beyond the download.

CSiSteel holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 19 and 7 respectively. Written reviews point the same way: 60% of Structural Engineering lite's written reviews are positive against 100% of CSiSteel's.

Structural Engineering lite ships an update every 6 months, CSiSteel every 3 weeks. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Structural Engineering lite | CSiSteel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (19 ratings)](https://appshunter.io/ios/app/structural-engineering-lite/id638690043/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/csisteel/id1435293643/reviews)** |
| Number of ratings | **19** | 7 |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 19 MB |
| Requires iOS | 17.6 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Computers and Structures, Inc.](https://appshunter.io/developer/1119970032) |

## 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 |


### CSiSteel

[App page](https://appshunter.io/ios/app/csisteel/id1435293643)

This app provides a comprehensive library of steel sections and their structural properties. It helps users find optimum sections for design, search for equivalents, and sort by various parameters. Ideal for engineers, suppliers, teachers, and students involved in steel design projects.

**Highlights:** Comprehensive steel section library, Find equivalent steel sections, Search and sort by section properties, Supports ASD and LRFD methods, Includes AISC, CISC, and Arcelormittal sections

**In-app purchases:** none


## Frequently asked questions

### Is Structural Engineering lite free?

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

### Is CSiSteel free?

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

### Which has better reviews, Structural Engineering lite or CSiSteel?

CSiSteel is rated higher. Structural Engineering lite averages 4.2 out of 5 from 19 ratings, while CSiSteel averages 5.0 from 7 ratings.

### Do Structural Engineering lite or CSiSteel have ads?

Structural Engineering lite shows ads; CSiSteel does not.

### Which is updated more often, Structural Engineering lite or CSiSteel?

Structural Engineering lite ships an update every 6 months, and CSiSteel every 3 weeks. Most recently, Structural Engineering lite was updated on October 13, 2026 and CSiSteel on September 29, 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.*