# IW 451 vs Millwrights 2158

The clearest difference is update cadence: Millwrights 2158 at every 5 days against IW 451's every 5 months. IW 451's advantage is iOS requirement (12.0 vs 15.0). 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.

IW 451 ships an update every 5 months, Millwrights 2158 every 5 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | IW 451 | Millwrights 2158 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/iw-451/id1582356496/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 117 MB | 111 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Iron Workers Local 451](https://appshunter.io/developer/1582356498) | [Millright Local 2158](https://appshunter.io/developer/6799343508) |

## What reviewers say

### IW 451

[App page](https://appshunter.io/ios/app/iw-451/id1582356496)

This app provides union members with essential information about their benefits, industry news, and union activities. It serves as a tool to enhance understanding of their role and available resources.

**Highlights:** General News & Updates, Industry & Contract Updates, Call Board Integration, Contact Information, Report Violations, Political Action & Organizing

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Millwrights 2158

[App page](https://appshunter.io/ios/app/millwrights-2158/id6799343506)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is IW 451 free?

IW 451 is free to download, with no in-app purchases.

### Is Millwrights 2158 free?

Millwrights 2158 is free to download, with no in-app purchases.

### Do IW 451 or Millwrights 2158 have ads?

Neither IW 451 nor Millwrights 2158 shows ads.

### Which is updated more often, IW 451 or Millwrights 2158?

IW 451 ships an update every 5 months, and Millwrights 2158 every 5 days. Most recently, IW 451 was updated on October 24, 2026 and Millwrights 2158 on October 24, 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.*