# UNO IAQ vs CMpro

UNO IAQ and CMpro 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | UNO IAQ | CMpro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 23 MB | 58 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Delta Electronics, Inc.](https://appshunter.io/developer/386896582) | [CHIMAY TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1300116699) |

## What reviewers say

### UNO IAQ

[App page](https://appshunter.io/ios/app/uno-iaq/id1510293346)

**In-app purchases:** none


### CMpro

[App page](https://appshunter.io/ios/app/cmpro/id6760374664)

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

**In-app purchases:** none


## Frequently asked questions

### Is UNO IAQ free?

UNO IAQ is free to download, with no in-app purchases.

### Is CMpro free?

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

### Do UNO IAQ or CMpro have ads?

Neither UNO IAQ nor CMpro shows ads.

### Which is updated more often, UNO IAQ or CMpro?

UNO IAQ ships an update every 2 months, and CMpro every 2 months. Most recently, UNO IAQ was updated on October 12, 2026 and CMpro on October 25, 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.*