# Vogel und Noot E3 App vs PSI Audio

The clearest difference is update cadence: PSI Audio at every 3 months against Vogel und Noot E3 App's every 14 months. Vogel und Noot E3 App's advantage is iOS requirement (11.0 vs 15.0). 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.

Vogel und Noot E3 App ships an update every 14 months, PSI Audio every 3 months. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Vogel und Noot E3 App | PSI Audio |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 14 MB | 47 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WebService](https://appshunter.io/developer/543180792) | [Relec SA](https://appshunter.io/developer/1607080945) |

## What reviewers say

### Vogel und Noot E3 App

[App page](https://appshunter.io/ios/app/vogel-und-noot-e3-app/id1454493772)

**Features:** macOS Compatibility

**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 Vogel und Noot E3 App free?

Vogel und Noot E3 App 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 Vogel und Noot E3 App or PSI Audio have ads?

Neither Vogel und Noot E3 App nor PSI Audio shows ads.

### Which is updated more often, Vogel und Noot E3 App or PSI Audio?

Vogel und Noot E3 App ships an update every 14 months, and PSI Audio every 3 months. Most recently, Vogel und Noot E3 App was updated on September 15, 2026 and PSI Audio on September 18, 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.*