# CSiSteel vs Mechanical Engineering Toolkit

The clearest difference is review sentiment: CSiSteel at 100% against Mechanical Engineering Toolkit's 57%. CSiSteel also leads on in-app purchases (none vs 1) and ads (none vs shown). Mechanical Engineering Toolkit's advantage is update cadence (weekly vs every 3 weeks) and ratings volume (64 vs 7). On price and device support there is nothing between them.

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

CSiSteel holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Mechanical Engineering Toolkit has 64 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 100% of CSiSteel's written reviews are positive against 57% of Mechanical Engineering Toolkit's.

CSiSteel ships an update every 3 weeks, Mechanical Engineering Toolkit weekly. The most recent releases landed on September 29, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | CSiSteel | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/csisteel/id1435293643/reviews)** | [4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews) |
| Number of ratings | 7 | **64** |
| Positive reviews | **100.0% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 19 MB | 43 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Computers and Structures, Inc.](https://appshunter.io/developer/1119970032) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### 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


### Mechanical Engineering Toolkit

[App page](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443)

This utility app provides a comprehensive collection of engineering equations and formulas for students and professionals. Easily perform calculations by selecting a formula and inputting variables, with detailed instructions and reference material included.

**Highlights:** Engineering equations and formulas, Mechanics of Material calculations, Theory of Elasticity formulas, Composite Material properties, Reference material, Variable input for calculations

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is CSiSteel free?

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

### Is Mechanical Engineering Toolkit free?

Mechanical Engineering Toolkit is free to download, with in-app purchases available.

### Which has better reviews, CSiSteel or Mechanical Engineering Toolkit?

CSiSteel is rated higher. CSiSteel averages 5.0 out of 5 from 7 ratings, while Mechanical Engineering Toolkit averages 4.8 from 64 ratings.

### Do CSiSteel or Mechanical Engineering Toolkit have ads?

Mechanical Engineering Toolkit shows ads; CSiSteel does not.

### Which is updated more often, CSiSteel or Mechanical Engineering Toolkit?

CSiSteel ships an update every 3 weeks, and Mechanical Engineering Toolkit weekly. Most recently, CSiSteel was updated on September 29, 2026 and Mechanical Engineering Toolkit on October 16, 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.*