Best Triple J Ductwork Apps

250+ iOS apps curated and reviewed

4.4 avg rating

19 free apps

Updated September 2026

Triple J Ductwork is the household name in triple j ductwork, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Triple J Ductwork Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Triple J Ductwork	Free	5.0★ (2)	No	No	Jul 2026
2	WinFab - Sheet Metal Ductulator	$3.99	4.8★ (6)	No	No	Aug 2026
3	Sheet Metal Calc - HVAC Duct	Free	—	No	Yes	Jun 2026
4	Digiduct	Free	4.6★ (11)	Yes	No	Jul 2026
5	Harbor Freight Tools	Free	4.8★ (225K)	No	No	Sep 2026
6	J-Bend	Free	2.0★ (3)	No	No	Jun 2026
7	Quietflex Ductulator	Free	5.0★ (1)	No	No	May 2026
8	Michaels Stores	Free	4.8★ (271K)	No	No	Sep 2026

Top Picks for Triple J Ductwork

#1

Triple J Ductwork by BiznetIS Net Inc

Editor's Choice

5.0(2 ratings)

Free

Triple J Ductwork screenshot 1

Triple J Ductwork screenshot 2

Triple J Ductwork screenshot 3

This app allows users to request quotes for custom metal parts, including ductwork and signs. It features a part-picking tool and a space to input specific measurements for fabrication projects.

#2

WinFab - Sheet Metal Ductulator by pasquale dipaola

Strong Contender

4.8(6 ratings)

$3.99

#18in Business

WinFab - Sheet Metal Ductulator screenshot 1

WinFab - Sheet Metal Ductulator screenshot 2

This app calculates the correct dimensions for sheet metal ductwork. It simplifies the process of determining airflow and pressure drop for HVAC systems. Essential for professionals in the sheet metal and HVAC industries.

#3

Sheet Metal Calc - HVAC Duct by Jackson Cowan

Sheets for duct fab + takeoffs

Worth Considering

0.0(0 ratings)

FreeIn-App Purchases

Sheet Metal Calc - HVAC Duct screenshot 1

Sheet Metal Calc - HVAC Duct screenshot 2

Sheet Metal Calc - HVAC Duct screenshot 3

Sheet Metal Calc - HVAC Duct screenshot 4

Sheet Metal Calc - HVAC Duct screenshot 5

More Triple J Ductwork apps to explore

Duct-Sizing App

This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.

Duct sizing for rectangular, round, and flat oval ductsCustomizable dimensions with locked valuesDuct location intelligence for context-aware sizing

Harbor Freight Tools

Harbor Freight Tools

Harbor Freight Tools

Harbor Freight Coupons

Discover the latest coupons, instant savings, and exclusive deals for members. Browse tools, check local stock, and create wish lists. Scan barcodes in-store for more product information.

Latest coupons and instant savingsInside Track Club member dealsBrowse tools and watch videos

🛍️ Shopping

by Jorns AG Lotzwil

Create, modify, and manage sheet metal profile designs for roofing, cladding, and general metal construction. This tool is tailored for professionals in the metal building industry.

Sheet metal profile drawingEditing capabilitiesProject organization

Quietflex Ductulator

Quietflex Ductulator

Quietflex Ductulator

by Goodman Manufacturing L.P.

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 CFMCalculate FPMCalculate FL

Michaels Stores

Michaels Stores

Michaels Stores

by Michaels Stores, Inc.

Shop for all your arts and crafts needs, find store locations, and access project ideas. Save money with weekly ads and coupons, and earn rewards through the Michaels Rewards program.

Shop for craft suppliesLocate nearby storesVoice search for items

🛍️ Shopping

free with in-app purchases

SMACNA Duct-U-Lator

SMACNA Duct-U-Lator

SMACNA Duct-U-Lator

Size Simple HVAC Duct Runs

This tool simplifies HVAC duct sizing for professionals. It quickly calculates dimensions for rectangular, round, and oval ducts based on airflow, friction loss, and velocity, ensuring optimal ventilation system performance.

Rectangular, round, and oval duct sizingReal-time calculation updatesConverts duct shapes and sizes

by Quinn Morrissette LLC

by P.J. Keating Co.

CAD for the HVAC installer

This app helps HVAC installers create precise ductwork transitions in the field using augmented reality. It streamlines the process of measuring, designing, and visualizing complex ductwork before cutting any materials, saving time and reducing errors.

Augmented reality visualizationDuctwork transition designField measurements input

🎨 Graphics & Design

by Mohamed Kharbat

Thermaflex Duct Calculator

Thermaflex Duct Calculator

Thermaflex Duct Calculator

by Gastite Products LLC

This utility app helps HVAC engineers quickly calculate the recommended Thermaflex duct size for installations. Input project volume and friction loss to determine the optimal duct size based on established industry standards.

Calculate recommended duct sizeInput project volume and friction lossSelect Thermaflex product

High-paying manufacturing jobs

This app connects manufacturing and skilled-trade professionals with high-paying jobs. It features exclusive roles with direct employer partnerships, transparent pay, and a streamlined application process. Build a profile with your skills and certifications to receive personalized job recommendations.

Manufacturing and skilled-trade job listingsLaborup Exclusive roles with direct applicationTransparent pay information

Trilok Steel Industries

Trilok Steel Industries

Trilok Steel Industries

by Last Local App Solutions Private Limited

This business app facilitates direct interaction between buyers and clients with a steel distribution company. It offers tools for calculations, data lookup, and business decision-making on the go, specializing in various metal products.

Direct buyer-client interactionTechnical data utilitiesWeight calculator

HVAC Duct Sizing Calculator

Spiralite Duct Sizer

Spiralite Duct Sizer

Spiralite Duct Sizer

by Khansaheb Industries Owned By Khansaheb Investment One Person CO LLC

Virtual Flange Slide Rule

Virtual Flange Slide Rule

Virtual Flange Slide Rule

by American Certified Equipment, Inc.

Access essential measurements and dimensional data for API 6A integral flanges. This tool provides quick access to critical specifications for engineering and industrial applications.

API 6A integral flange dataRelevant measurementsDimensional data access

Industrial Metal Services

Industrial Metal Services

Industrial Metal Services

More than Steel

FAQ about Triple J Ductwork

What are the best triple j ductwork apps for iPhone?

Triple J Ductwork tops our triple j ductwork apps ranking as of September 2026, with a 5.0-star average from 2 App Store ratings, and it's free to download.

Are there free triple j ductwork apps for iPhone?

Yes — 19 of the top triple j ductwork apps we rank are free to download, including Triple J Ductwork and Sheet Metal Calc - HVAC Duct.

Does Triple J Ductwork have ads or in-app purchases?

Triple J Ductwork has no ads and has no in-app purchases, according to its App Store listing as of September 2026.

How many triple j ductwork apps are on the App Store?

We track 250+ triple j ductwork apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What services does Triple J Ductwork offer?

Triple J Ductwork specializes in high-quality commercial and residential ductwork, spiral ductwork, custom sheet metal products, metal signs, metal art, and heating and cooling products. They fabricate metal products for projects of all sizes.

How do I get a quote for custom parts with Triple J Ductwork?

You can obtain a quote by using the app's part-picking tool and specifying custom measurements for your desired parts. This allows for detailed requests for fabrication.