# Universal AC Controller vs O2B Gym

The clearest difference is in-app purchases: O2B Gym at none against Universal AC Controller's 3. O2B Gym also leads on update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Universal AC Controller sells 3 in-app purchases, starting at $3.99 per 7 days. O2B Gym asks for nothing beyond the download.

Universal AC Controller ships an update every 5 days, O2B Gym every 2 days. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Universal AC Controller | O2B Gym |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 31 MB | 21 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sharaiz Iftikhair](https://appshunter.io/developer/1858642963) | [Ameet Aujla](https://appshunter.io/developer/1722145495) |

## What reviewers say

### Universal AC Controller

[App page](https://appshunter.io/ios/app/universal-ac-controller/id6756133569)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $3.99 | per 7 days |
| Monthly subscription | $9.99 | per month |
| Yearly autorenewed subscription | $39.99 | per year |


### O2B Gym

[App page](https://appshunter.io/ios/app/o2b-gym/id6774928422)

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

**In-app purchases:** none


## Frequently asked questions

### Is Universal AC Controller free?

Universal AC Controller is free to download, with in-app purchases available.

### Is O2B Gym free?

O2B Gym is free to download, with no in-app purchases.

### Do Universal AC Controller or O2B Gym have ads?

Neither Universal AC Controller nor O2B Gym shows ads.

### Which is updated more often, Universal AC Controller or O2B Gym?

Universal AC Controller ships an update every 5 days, and O2B Gym every 2 days. Most recently, Universal AC Controller was updated on October 2, 2026 and O2B Gym on October 5, 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.*