# Comfort Sync® Dealer Setup vs Arzel Pro

The clearest difference is update cadence: Arzel Pro at every 3 months against Comfort Sync® Dealer Setup's every 6 months. Comfort Sync® Dealer Setup's advantage is iOS requirement (9.0 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.

Comfort Sync® Dealer Setup ships an update every 6 months, Arzel Pro every 3 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Comfort Sync® Dealer Setup | Arzel Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/arzel-pro/id6670562268/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 83 MB | 11 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Allied Air Enterprises inc.](https://appshunter.io/developer/618048457) | [Arzel Technology, Inc.](https://appshunter.io/developer/644309533) |

## What reviewers say

### Comfort Sync® Dealer Setup

[App page](https://appshunter.io/ios/app/comfort-sync-dealer-setup/id1513891802)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Arzel Pro

[App page](https://appshunter.io/ios/app/arzel-pro/id6670562268)

This app allows HVAC contractors to configure and manage a universal zoning panel. It offers easy setup, diagnostics, and software updates via a Bluetooth connection. Homeowners control the system through installed thermostats.

**Highlights:** App-controlled zoning panel, Create up to 16 zones, One-tap equipment settings, Bluetooth configuration, System diagnostics, Software updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Comfort Sync® Dealer Setup free?

Comfort Sync® Dealer Setup is free to download, with no in-app purchases.

### Is Arzel Pro free?

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

### Do Comfort Sync® Dealer Setup or Arzel Pro have ads?

Neither Comfort Sync® Dealer Setup nor Arzel Pro shows ads.

### Which is updated more often, Comfort Sync® Dealer Setup or Arzel Pro?

Comfort Sync® Dealer Setup ships an update every 6 months, and Arzel Pro every 3 months. Most recently, Comfort Sync® Dealer Setup was updated on November 7, 2026 and Arzel Pro on October 30, 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.*