# WeldEquations vs CSiRebar

The clearest difference is update cadence: CSiRebar at fortnightly against WeldEquations's every 12 months. CSiRebar 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, CSiRebar fortnightly. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | WeldEquations | CSiRebar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/csirebar/id1435265034/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 7 MB | 14 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


### CSiRebar

[App page](https://appshunter.io/ios/app/csirebar/id1435265034)

This app helps structural and civil engineers quickly convert between bar sizes, steel area, and spacing requirements. It supports ASTM, Metric, and Imperial standards, offering various reinforcement layout options for design and analysis.

**Highlights:** Converts bar sizes, steel area, and spacing, Supports ASTM, Metric, and Imperial standards, Generates multiple reinforcement layouts, Allows combined reinforcement layouts, User-defined rules for bar selection, Provides alternative reinforcement layouts

**In-app purchases:** none


## Frequently asked questions

### Is WeldEquations free?

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

### Is CSiRebar free?

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

### Do WeldEquations or CSiRebar have ads?

Neither WeldEquations nor CSiRebar shows ads.

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

WeldEquations ships an update every 12 months, and CSiRebar fortnightly. Most recently, WeldEquations was updated on September 27, 2026 and CSiRebar 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.*