ComfoControl vs PhaseStor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ComfoControl
Control your home ventilation system remotely or locally. Get alerts for filter changes and monitor system data. Installers can set up units and provide remote support.
- Remote and local system control
- Filter change assistant
- Ventilation unit data overview
- Installer setup and commissioning
- Remote customer support
- Firmware updates
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The Zehnder ComfoControl App offers: - Convenient local and remote control of your ComfoAir Q and ComfoAir Flex* ventilation system - A filter change assistant - A comprehensive overview of data from the ventilation unit, sensors and connected devices - For installers: easy set-up and commissioning of ComfoAir Q and ComfoAir Flex* ventilation systems - For registered installers: Providing remote support to customers and firmware updates of ventilation units * not available in all markets Are you interested in additional features such as voice control and a dashboard? Sign up for the beta program: https://www.international.zehnder-systems.com/connected-products
PhaseStor
This app focuses on advanced thermal energy storage systems, aiming to reshape energy utilization for a sustainable future. It highlights eco-friendly water heating technology designed to revolutionize sustainable water heating.
- Advanced thermal energy storage
- Eco-friendly water heating systems
- Sustainable energy utilization
- Revolutionary heating technology
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PhaseStor pioneers advanced thermal energy storage systems. Reshaping energy utilization for a more sustainable future. eSTOR is the pinnacle of eco-friendly water heating systems. This cutting-edge technology is designed to revolutionize the way we heat water sustainably.
Screenshots
Verdict
The clearest difference is rating: PhaseStor at 5.0 against ComfoControl's 3.8. PhaseStor also leads on update cadence (every 2 weeks vs every 4 months). ComfoControl's advantage is ratings volume (6 vs 1). On price, ads, in-app purchases and monetization model 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.
PhaseStor holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: ComfoControl has 6 ratings behind it against 1, so its average is the more settled of the two.
ComfoControl ships an update every 4 months, PhaseStor every 2 weeks. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.
| Parameter | ComfoControl | PhaseStor |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (6 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 33 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Zehnder Group AG | Phasestor |
Customer experience
ComfoControl
PhaseStor
In-app purchases
ComfoControl
No in-app purchases
PhaseStor
No in-app purchases
