# WeldEquations vs CSiSteel

The clearest difference is update cadence: CSiSteel at every 3 weeks against WeldEquations's every 12 months. CSiSteel also leads on iOS requirement (9.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WeldEquations ships an update every 12 months, CSiSteel every 3 weeks. The most recent releases landed on July 4, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | WeldEquations | CSiSteel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/csisteel/id1435293643/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 7 MB | 19 MB |
| Requires iOS | 26.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Glendale Coding Labs, Inc](https://appshunter.io/developer/1266859626) | [Computers and Structures, Inc.](https://appshunter.io/developer/1119970032) |

## What reviewers say

### WeldEquations

[App page](https://appshunter.io/ios/app/weldequations/id1266859627)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 WeldEquations free?

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

### Is CSiSteel free?

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

### Do WeldEquations or CSiSteel have ads?

Neither WeldEquations nor CSiSteel shows ads.

### Which is updated more often, WeldEquations or CSiSteel?

WeldEquations ships an update every 12 months, and CSiSteel every 3 weeks. Most recently, WeldEquations was updated on July 4, 2026 and CSiSteel on July 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*