PSI Audio vs AcousticCheck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PSI Audio
Remotely control your AVAA active system for low-frequency room mode absorption. Access device information, update firmware, and learn about acoustics and room modes.
- Remote AVAA system control
- Device information access (serial, firmware, SSID)
- Firmware updates
- Acoustics and room mode information
- Optimized absorption features
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The AVAA is a unique active system to absorb low frequency room modes in a room. This application allows you to remotely control your AVAA(s) through your mobile phone. It also gives you access to all the information relative to your device such as serial number, firmware version, SSID, etc. You will also need this application to get access to the latest firmware and ensure you have all available features and optimised absorption. Furthermore, this application will give you general information on acoustics, room modes and how best to use your AVAA(s).
AcousticCheck
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With AcousticCheck, the reverberation time (RT60) can be measured simple, fast and with high accuracy - even by people without acoustic expertise. AcousticCheck includes the following features for a smooth measurement experience: - Reverberation time measurement by impulse or sweep method - Up to nine consecutive measurements per measurement run for the most accurate results possible - Simple tutorial and guided measurement instructions - Detailed result display: Reverberation time on average and in octaves⁺ (chart, table) - Save measurement results for individual rooms or whole projects⁺ - Save and Share the measurement results as a chart and table⁺ - In-depth support⁺ Additional features for advanced and expert users: - Customizable room size (particularly helpful for measurements in larger rooms)⁺ - Adjustable start delay for impulse measurements⁺ - Save and Share results in CSV format (full measurement results, average reverberation times, correlation coefficient rT20 & signal-to-noise ratio SNR included)⁺ - Information on the room and additional notes can be added to the result export - Photos can be added to the result export - Optional export of impulse responses as WAV files⁺ ⁺only included in AcousticCheck Plus This app does not collect, use, store or transfer personal data. With your permission, Apple collects app analytics to help developers improve their apps. For more information, see the links below. Apple Privacy Policy: https://www.apple.com/privacy/ Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: PSI Audio at every 2 months against AcousticCheck's every 4 months. PSI Audio also leads on iOS requirement (14.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PSI Audio ships an update every 2 months, AcousticCheck every 4 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.
| Parameter | PSI Audio | AcousticCheck |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 26 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Relec SA | rosenbinder UG |
In-app purchases
PSI Audio
No in-app purchases
AcousticCheck
No in-app purchases
