# ATU App vs IUOE 99

The clearest difference is rating: ATU App at 5.0 against IUOE 99's 4.8. ATU App also leads on update cadence (every 5 weeks vs every 3 months). IUOE 99's advantage is iOS requirement (12.0 vs 14.0). On price, ratings volume, 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.

ATU App holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 3 and 8 respectively.

ATU App ships an update every 5 weeks, IUOE 99 every 3 months. The most recent releases landed on September 26, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | ATU App | IUOE 99 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/atu-app/id1046560332/reviews)** | [4.8 (8 ratings)](https://appshunter.io/ios/app/iuoe-99/id6468943763/reviews) |
| Number of ratings | 3 | **8** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 25 MB | 119 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Amalgamated Transit Union, AFL-CIO/CLC](https://appshunter.io/developer/1046560331) | [International Union Of Operating Engineers Local 99](https://appshunter.io/developer/1710999668) |

## What reviewers say

### ATU App

[App page](https://appshunter.io/ios/app/atu-app/id1046560332)

Stay informed with the official mobile application for the Amalgamated Transit Union. Access the latest news, discover local events, engage in union activities, and view event photos.

**Highlights:** Latest union news and updates, Information on local events, Tools for taking action, Event photo gallery, Official ATU content

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

**In-app purchases:** none


### IUOE 99

[App page](https://appshunter.io/ios/app/iuoe-99/id6468943763)

This app provides union members with access to news, industry updates, and important contact information. It serves as a tool to understand available benefits and engage with union activities.

**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


## Frequently asked questions

### Is ATU App free?

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

### Is IUOE 99 free?

IUOE 99 is free to download, with no in-app purchases.

### Which has better reviews, ATU App or IUOE 99?

ATU App is rated higher. ATU App averages 5.0 out of 5 from 3 ratings, while IUOE 99 averages 4.8 from 8 ratings.

### Do ATU App or IUOE 99 have ads?

Neither ATU App nor IUOE 99 shows ads.

### Which is updated more often, ATU App or IUOE 99?

ATU App ships an update every 5 weeks, and IUOE 99 every 3 months. Most recently, ATU App was updated on September 26, 2026 and IUOE 99 on September 20, 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.*