HetaHAC2.0 vs PSI Audio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HetaHAC2.0
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There is an indicator attached to the oven which, using colour codes (red, yellow and green) draws attention to if there is a need for new ignition, or if too much firewood is loaded. The stove’s door is equipped with a door sensor that detects when new firewood has been added.
PSI Audio
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.
- Remote control for AVAA units
- Access device information (serial number, firmware)
- Firmware updates
- Information on acoustics and room modes
- Optimized absorption settings
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This is the official app to control PSI Audio AVAA units with the latest firmware. If you are looking for the legacy PSI Audio app (for older units), please search for “PSI Audio – Legacy” in the store. 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).
Screenshots
Verdict
The clearest difference is iOS requirement: HetaHAC2.0 at 13.6 against PSI Audio's 15.0. On price, update cadence, ads and in-app purchases 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.
HetaHAC2.0 ships an update every 5 months, PSI Audio every 3 months. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.
| Parameter | HetaHAC2.0 | PSI Audio |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.6 — better | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Timpex | Relec SA |
In-app purchases
HetaHAC2.0
No in-app purchases
PSI Audio
No in-app purchases
