# ComfoControl vs PhaseStor

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.

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.

## The numbers

| Metric | ComfoControl | PhaseStor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/comfocontrol/id1104291808/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/phasestor/id6740872085/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 33 MB | 99 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zehnder Group AG](https://appshunter.io/developer/1104291807) | [Phasestor](https://appshunter.io/developer/1792010245) |

## What reviewers say

### ComfoControl

[App page](https://appshunter.io/ios/app/comfocontrol/id1104291808)

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.

**Highlights:** Remote and local system control, Filter change assistant, Ventilation unit data overview, Installer setup and commissioning, Remote customer support, Firmware updates

**Features:** macOS Compatibility

**In-app purchases:** none


### PhaseStor

[App page](https://appshunter.io/ios/app/phasestor/id6740872085)

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.

**Highlights:** Advanced thermal energy storage, Eco-friendly water heating systems, Sustainable energy utilization, Revolutionary heating technology

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ComfoControl free?

ComfoControl is free to download, with no in-app purchases.

### Is PhaseStor free?

PhaseStor is free to download, with no in-app purchases.

### Which has better reviews, ComfoControl or PhaseStor?

PhaseStor is rated higher. ComfoControl averages 3.8 out of 5 from 6 ratings, while PhaseStor averages 5.0 from 1 ratings.

### Do ComfoControl or PhaseStor have ads?

Neither ComfoControl nor PhaseStor shows ads.

### Which is updated more often, ComfoControl or PhaseStor?

ComfoControl ships an update every 4 months, and PhaseStor every 2 weeks. Most recently, ComfoControl was updated on October 8, 2026 and PhaseStor on October 5, 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.*