# Building Acoustics Partner vs PSI Audio

Building Acoustics Partner and PSI Audio 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.

Building Acoustics Partner ships an update every 4 months, PSI Audio every 3 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Building Acoustics Partner | PSI Audio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/psi-audio-avaa-controller/id6651839273/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 210 MB | 47 MB |
| Requires iOS | 15.0 | 15.0 |
| 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-avaa-controller/id6651839273)

Control PSI Audio AVAA units with this official remote app. Access device information, update firmware, and learn about room acoustics. Optimize your low-frequency sound absorption.

**Highlights:** Remote control for AVAA units, Access device information (serial number, firmware), Firmware updates, Information on acoustics and room modes, Optimized absorption settings

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

**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 3 months. Most recently, Building Acoustics Partner was updated on November 3, 2026 and PSI Audio on November 4, 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.*