# AIROIN vs PrimoAire

AIROIN and PrimoAire 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.

AIROIN ships an update every 10 months, PrimoAire every 9 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | AIROIN | PrimoAire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/primoaire/id1636626001/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 months** |
| Monetization | — | Free |
| Size | 10 MB | 33 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SHIN-AH ELECTRONICS CO.,LTD](https://appshunter.io/developer/1470174479) | [PrimoAire LLC](https://appshunter.io/developer/1636626003) |

## What reviewers say

### AIROIN

[App page](https://appshunter.io/ios/app/airoin/id1470174480)

**Features:** macOS Compatibility

**In-app purchases:** none


### PrimoAire

[App page](https://appshunter.io/ios/app/primoaire/id1636626001)

Monitor your home's air quality in real-time with this app. Track changes and control connected devices to improve your indoor environment.

**Highlights:** Real-time air quality tracking, Control third-party devices, Monitor home air quality, Improve indoor environment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AIROIN free?

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

### Is PrimoAire free?

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

### Do AIROIN or PrimoAire have ads?

Neither AIROIN nor PrimoAire shows ads.

### Which is updated more often, AIROIN or PrimoAire?

AIROIN ships an update every 10 months, and PrimoAire every 9 months. Most recently, AIROIN was updated on October 7, 2026 and PrimoAire on October 7, 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.*