# Ironworkers 580 MAP vs Ironworkers 66

Ironworkers 580 MAP and Ironworkers 66 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Ironworkers 580 MAP ships an update every 6 months, Ironworkers 66 every 3 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ironworkers 580 MAP | Ironworkers 66 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ironworkers-66/id6754759963/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 118 MB | 116 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [INTERNATIONAL ASSOCIATION OF BRIDGE IRONWORKERS LOCAL 417](https://appshunter.io/developer/1648074315) | [International Assn of Bridge Structural and Ornamental Iron Workers LU 66](https://appshunter.io/developer/1849884357) |

## What reviewers say

### Ironworkers 580 MAP

[App page](https://appshunter.io/ios/app/ironworkers-580-map/id6745402084)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Ironworkers 66

[App page](https://appshunter.io/ios/app/ironworkers-66/id6754759963)

Stay informed about union news, events, and benefits. Access member tools like wage rates and a digital card. Connect with your union and learn about signatory contractors and political action.

**Highlights:** Union news and events, Member benefits information, Signatory contractor directory, Political action resources, Digital membership card, Wage rate information

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Ironworkers 580 MAP free?

Ironworkers 580 MAP is free to download, with no in-app purchases.

### Is Ironworkers 66 free?

Ironworkers 66 is free to download, with no in-app purchases.

### Do Ironworkers 580 MAP or Ironworkers 66 have ads?

Neither Ironworkers 580 MAP nor Ironworkers 66 shows ads.

### Which is updated more often, Ironworkers 580 MAP or Ironworkers 66?

Ironworkers 580 MAP ships an update every 6 months, and Ironworkers 66 every 3 months. Most recently, Ironworkers 580 MAP was updated on October 25, 2026 and Ironworkers 66 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.*