# CMPX Show vs OBOA AMTS

The clearest difference is update cadence: OBOA AMTS at every 2 months against CMPX Show's every 23 months. CMPX Show's advantage is iOS requirement (11.0 vs 15.6). 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.

CMPX Show ships an update every 23 months, OBOA AMTS every 2 months. The most recent releases landed on October 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CMPX Show | OBOA AMTS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 2 months** |
| Size | 11 MB | 38 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Mobile Town Guide](https://appshunter.io/developer/1076797990) | [Ontario Building Officials Association](https://appshunter.io/developer/1473320808) |

## What reviewers say

### CMPX Show

[App page](https://appshunter.io/ios/app/cmpx-show/id1615232934)

**Features:** macOS Compatibility

**In-app purchases:** none


### OBOA AMTS

[App page](https://appshunter.io/ios/app/oboa-amts/id6762288180)

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

**In-app purchases:** none


## Frequently asked questions

### Is CMPX Show free?

CMPX Show is free to download, with no in-app purchases.

### Is OBOA AMTS free?

OBOA AMTS is free to download, with no in-app purchases.

### Do CMPX Show or OBOA AMTS have ads?

Neither CMPX Show nor OBOA AMTS shows ads.

### Which is updated more often, CMPX Show or OBOA AMTS?

CMPX Show ships an update every 23 months, and OBOA AMTS every 2 months. Most recently, CMPX Show was updated on October 25, 2026 and OBOA AMTS on October 4, 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.*