EWC Controls, LLC vs Arzel Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EWC Controls, LLC
This app helps EWC contractors determine their zoning system requirements. It features a Bypass Calculator to recommend damper models and sizes, and a Control Panel Finder to suggest compatible control panels. Discover products and features to assist in setting up your zoning system.
- Bypass Damper Calculator
- Control Panel Finder
- Product Discovery
- Zoning System Setup Assistance
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Built for EWC contractors, use our new mobile app to determine your EWC zoning system needs. Use the Bypass Calculator to find out what model and size Bypass Damper you should use with your system based on your input. Use the Control Panel Finder to find out what model Control Panels you can use based on what you need. Discover products and features that will help you decide what parts you need to set up your zoning system!
Arzel Pro
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.
- App-controlled zoning panel
- Create up to 16 zones
- One-tap equipment settings
- Bluetooth configuration
- System diagnostics
- Software updates
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The Pro Panel is the future of zoning control technology, from Arzel Zoning Technology. This universal HVAC zoning panel is app-controlled and more customizable than ever. Create up to 16 zones, install with one-tap equipment settings, and use the Arzel Pro app for easy setup and diagnostics. The Arzel Pro app configures the Pro Panel using a Bluetooth connection. Connect your device to the Pro Panel to see current system information or to configure a new panel. The app also allows you to update the Pro Panel software if an update is available. This app is intended for HVAC contractors. Home and building owners can control the Pro Panel using the thermostats installed with the system.
Screenshots
Verdict
The clearest difference is update cadence: EWC Controls, LLC at every 9 days against Arzel Pro's every 3 months. EWC Controls, LLC also leads on ratings volume (5 vs 1). On price, rating, 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.
On the App Store both sit at effectively the same score — 5.0 for EWC Controls, LLC against 5.0 for Arzel Pro. That said, the two scores are not equally well evidenced: EWC Controls, LLC has 5 ratings behind it against 1, so its average is the more settled of the two.
EWC Controls, LLC ships an update every 9 days, Arzel Pro every 3 months. The most recent releases landed on September 14, 2026 and June 26, 2026 respectively.
| Parameter | EWC Controls, LLC | Arzel Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 9 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | EWC Controls, Inc. | Arzel Technology, Inc. |
In-app purchases
EWC Controls, LLC
No in-app purchases
Arzel Pro
No in-app purchases
