# ATHS Connect vs IAM 99

The clearest difference is ads: ATHS Connect at none against IAM 99's shown. On price, update cadence, 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.

ATHS Connect ships an update every 4 months, IAM 99 every 6 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ATHS Connect | IAM 99 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 6 months |
| Size | 55 MB | 54 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [American Truck Historical Society](https://appshunter.io/developer/1618751362) | [International Association of Machinists and Aerospace Workers (Edmonton)](https://appshunter.io/developer/1815549115) |

## What reviewers say

### ATHS Connect

[App page](https://appshunter.io/ios/app/aths-connect/id1618751360)

**Features:** Vision Pro support

**In-app purchases:** none


### IAM 99

[App page](https://appshunter.io/ios/app/iam-99/id6746168477)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ATHS Connect free?

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

### Is IAM 99 free?

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

### Do ATHS Connect or IAM 99 have ads?

IAM 99 shows ads; ATHS Connect does not.

### Which is updated more often, ATHS Connect or IAM 99?

ATHS Connect ships an update every 4 months, and IAM 99 every 6 months. Most recently, ATHS Connect was updated on October 7, 2026 and IAM 99 on October 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.*