# IW 33 vs UA 51

The clearest difference is rating: UA 51 at 5.0 against IW 33's 4.3. IW 33's advantage is ratings volume (6 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

UA 51 holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: IW 33 has 6 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | IW 33 | UA 51 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/iw-33/id1601091146/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ua-51/id6443650616/reviews)** |
| Number of ratings | **6** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 117 MB | 116 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Iron Workers Local Union 33](https://appshunter.io/developer/1601091148) | [PLUMBERS & PIPEFITTERS LOCAL 51 REALTY CORPORATION](https://appshunter.io/developer/1648072239) |

## What reviewers say

### IW 33

[App page](https://appshunter.io/ios/app/iw-33/id1601091146)

Stay informed about your union with access to local information, news, and upcoming events. Receive push notifications for important updates and find resources for mental wellness and political involvement.

**Highlights:** Local union information, Announcements and events, Push notifications, Mental health resources, Political information

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### UA 51

[App page](https://appshunter.io/ios/app/ua-51/id6443650616)

Stay informed about your union membership with essential updates and notifications. Access organizing materials, make online payments, view social media, and manage your membership portal.

**Highlights:** Push notifications for updates, Organizing material access, Online dues payments, Social media feed, Membership portal

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is IW 33 free?

IW 33 is free to download, with no in-app purchases.

### Is UA 51 free?

UA 51 is free to download, with no in-app purchases.

### Which has better reviews, IW 33 or UA 51?

UA 51 is rated higher. IW 33 averages 4.3 out of 5 from 6 ratings, while UA 51 averages 5.0 from 1 ratings.

### Do IW 33 or UA 51 have ads?

Neither IW 33 nor UA 51 shows ads.

### Which is updated more often, IW 33 or UA 51?

IW 33 ships an update every 3 months, and UA 51 every 3 months. Most recently, IW 33 was updated on November 3, 2026 and UA 51 on November 3, 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.*