# MyAir4 vs PSA Centrii

The clearest difference is review sentiment: PSA Centrii at 33% against MyAir4's 13%. MyAir4's advantage is iOS requirement (10.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MyAir4 | PSA Centrii |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 13.3% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 17 MB | 190 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Advantage Air Aust Pty Ltd](https://appshunter.io/developer/481563586) | [PSA Products Pty Ltd](https://appshunter.io/developer/1514298728) |

## What reviewers say

### MyAir4

[App page](https://appshunter.io/ios/app/myair4/id925994861)

Remotely manage your Advantage Air air-conditioning system from any location. Requires a connected MyAir4 system and internet access. Provides convenient control over your home's climate.

**Highlights:** Remote system control, Global access, Internet connectivity required, Home Wi-Fi zone connection, System setup support

**In-app purchases:** none


### PSA Centrii

[App page](https://appshunter.io/ios/app/psa-centrii/id1514298729)

This app provides safety and security for families by allowing remote control and communication with IoT-enabled devices. It enables users to manage multiple smart devices, automate interactions, share access with family, and receive real-time alerts.

**Highlights:** Remote device communication and control, Manage multiple IoT devices, Smart automation control, Share devices with family, Real-time alerts, Easy device pairing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MyAir4 free?

MyAir4 is free to download, with no in-app purchases.

### Is PSA Centrii free?

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

### Do MyAir4 or PSA Centrii have ads?

Neither MyAir4 nor PSA Centrii shows ads.

### Which is updated more often, MyAir4 or PSA Centrii?

MyAir4 ships an update every 3 months, and PSA Centrii every 3 months. Most recently, MyAir4 was updated on November 1, 2026 and PSA Centrii on November 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.*