# Building Acoustics Partner vs PSI Audio

The clearest difference is update cadence: PSI Audio at every 2 months against Building Acoustics Partner's every 4 months. 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.

Building Acoustics Partner ships an update every 4 months, PSI Audio every 2 months. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Building Acoustics Partner | PSI Audio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/psi-audio/id1607080943/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 210 MB | 26 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hottinger Bruel & Kjaer A/S](https://appshunter.io/developer/622515894) | [Relec SA](https://appshunter.io/developer/1607080945) |

## What reviewers say

### Building Acoustics Partner

[App page](https://appshunter.io/ios/app/building-acoustics-partner/id1487977751)

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

**In-app purchases:** none


### PSI Audio

[App page](https://appshunter.io/ios/app/psi-audio/id1607080943)

Remotely control your AVAA active system for low-frequency room mode absorption. Access device information, update firmware, and learn about acoustics and room modes.

**Highlights:** Remote AVAA system control, Device information access (serial, firmware, SSID), Firmware updates, Acoustics and room mode information, Optimized absorption features

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Building Acoustics Partner free?

Building Acoustics Partner is free to download, with no in-app purchases.

### Is PSI Audio free?

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

### Do Building Acoustics Partner or PSI Audio have ads?

Neither Building Acoustics Partner nor PSI Audio shows ads.

### Which is updated more often, Building Acoustics Partner or PSI Audio?

Building Acoustics Partner ships an update every 4 months, and PSI Audio every 2 months. Most recently, Building Acoustics Partner was updated on October 26, 2026 and PSI Audio on October 23, 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.*