EWC Controls, LLC vs Quietflex Ductulator
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
Read full descriptionHide full description
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!
Quietflex Ductulator
This utility app helps HVAC professionals and enthusiasts quickly calculate essential airflow metrics for various duct sizes. It provides CFM, FPM, and FL values, simplifying HVAC system design and analysis.
- Calculate CFM
- Calculate FPM
- Calculate FL
- Supports different duct diameters
- HVAC system analysis
Read full descriptionHide full description
Use the Quietflex Ductulator app to calculate CFM, FPM, and FL of different diameter ducts.
Screenshots
Verdict
The clearest difference is update cadence: Quietflex Ductulator at every 3 days against EWC Controls, LLC's every 9 days. Quietflex Ductulator also leads on iOS requirement (8.0 vs 16.4). EWC Controls, LLC's advantage is 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 Quietflex Ductulator. 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, Quietflex Ductulator every 3 days. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.
| Parameter | EWC Controls, LLC | Quietflex Ductulator |
|---|---|---|
| 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 | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 8.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | EWC Controls, Inc. | Goodman Manufacturing L.P. |
Customer experience
EWC Controls, LLC
Quietflex Ductulator
In-app purchases
EWC Controls, LLC
No in-app purchases
Quietflex Ductulator
No in-app purchases
Questions
Is EWC Controls, LLC free?
Is Quietflex Ductulator free?
Which has better reviews, EWC Controls, LLC or Quietflex Ductulator?
Do EWC Controls, LLC or Quietflex Ductulator have ads?
Which is updated more often, EWC Controls, LLC or Quietflex Ductulator?
Other comparisons
