HVAC Calc – Duct & Airflow is made and published by NURDAN ARI. AppBrain is an independent app data site and isn't affiliated with NURDAN ARI. The app name, icon, screenshots and description belong to NURDAN ARI and are shown as published on the App Store.
AppBrain's verdict
Removed- Rating on App Store
- 5.00
- 2 ratings
- Last updated
- September 16, 2025
HVAC Calc – Duct & Airflow is no longer on the App Store. It had too few ratings to say what users thought.
Competitors
Similar apps and more from NURDAN ARIMore from NURDAN ARI
Releases
Updates seen on the App Store- Version
- 1.0.4
- Launched
- August 2025
No changelog data
User feedback
Ratings and reviews on the App StoreComments on HVAC Calc – Duct & Airflow for iOS
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 5.57 MB
- Content rating
- High
Technologies used by HVAC Calc – Duct & Airflow
About the app and developer
About HVAC Calc – Duct & Airflow
HVAC Calc – Duct & Airflow was an utilities app developed by NURDAN ARI. It was removed from the App Store Dec 7, 2025.
User Ratings
HVAC Calc – Duct & Airflow was rated 5.00 out of 5 stars, based on 2 ratings.
App Information
HVAC Calc – Duct & Airflow was free. The app size was 5.57 MB. The last available version was 1.0.4. The last update was on September 16, 2025.
Technical Requirements
The app had a content rating of High Maturity. The app had been available on the App Store since August 2025.
Developer information for NURDAN ARI
Address:
Store listing
By NURDAN ARI, from the App StoreSimilar apps
Description by NURDAN ARI Written by the developer, not by AppBrain. Click to read.
Air Duct Calc is your all-in-one HVAC toolkit, designed to give you instant answers without an internet connection. Simplify your workflow and get accurate results in seconds.
YOUR FIELD CALCULATIONS, SIMPLIFIED:
▶ Instant Duct Sizing Forget the manual work. Input your airflow and velocity to get precise circular and rectangular duct dimensions instantly.
▶ One-Tap Airflow & Velocity Working with existing ducts? Enter the area to immediately calculate the airflow in both CFM and L/s.
▶ Accurate Friction Loss Based on the Darcy-Weisbach formula, get reliable friction loss data (Pa/m & in.wg/100 ft) to ensure your system is designed correctly.
▶ Essential Conversion Tools
* Rectangular to Circular: Seamlessly find the equivalent hydraulic diameter for any duct.
* SI & Imperial: Switch between metric and imperial units on the fly.
BUILT FOR THE REAL WORLD:
* 100% Offline Functionality: Perfect for basements, new constructions, and areas with no signal.
* PDF Report Generator: Quickly create and share professional PDF reports of your calculations.
* Clean & Fast Interface: No clutter. Just the tools you need, right when you need them.
Whether you're an engineer, a technician, or a student, Air Duct Calc is the essential tool to make your job easier. Download now!
HVAC Calc brings the essential duct & airflow math to your phone—offline and on site.
* Duct Sizing: diameter from Q & V; rectangular area/velocity and equivalent (ASHRAE)
* Airflow: velocity + area → flow (L/s & CFM side-by-side)
* Rect ↔ Circ: equivalent circular & hydraulic diameter (4A/P)
* Friction Loss: Darcy–Weisbach with Swamee–Jain (Pa/m & in.wg/100 ft)
* Psychrometrics: dew point (Magnus)
* PDF Expert: Images → PDF, plus HVAC report generator & viewer
* Units: instant SI/Imperial toggle
* Design: polished dark UI built with SwiftUI