Best Ductwork Apps

233+ iOS apps curated and reviewed

4.7 avg rating
17 free apps
Updated July 2026

With an average user rating of 4.7★, the ductwork category is one of the App Store's strongest. Browse all 233+ apps we track, sorted so the most loved ones surface first.

Compare top Ductwork Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1FieldFabFieldFabFree4.4★ (65)NoNoJul 2026
2SMACNA Duct-U-LatorSMACNA Duct-U-LatorFree5.0★ (1)NoNoMay 2026
3Triple J DuctworkTriple J DuctworkFree5.0★ (2)NoNoJul 2026
4SuperCool Slide Rule HVACSuperCool Slide Rule HVACFree4.2★ (185)NoNoAug 2026
5Duct Calculator - DuctCalcDuct Calculator - DuctCalcFree5.0★ (7)NoYesAug 2026
6Heating & Cooling HVAC Pro+Heating & Cooling HVAC Pro+Free4.7★ (43)NoNoJul 2026
7DigiductDigiductFree4.6★ (11)YesNoJul 2026
8Spiralite Duct SizerSpiralite Duct SizerFreeNoNoMay 2026

Top Picks for Ductwork

FieldFab#1

FieldFab by Robert Sale

CAD for the HVAC installer
Editor's Choice
🎨 Graphics & Design
4.4(65 ratings)
Free
FieldFab screenshot 1
FieldFab screenshot 2
FieldFab screenshot 3
FieldFab screenshot 4
FieldFab screenshot 5

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.

Triple J Ductwork#3

Triple J Ductwork by BiznetIS Net Inc

Worth Considering
🔧 Utilities
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.

More Ductwork apps to explore

4
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
by Designstein, llc
Free

This app offers a comprehensive suite of tools for HVAC technicians. It provides interactive guides, step-by-step repair instructions, and calculators for various HVAC calculations including superheat, subcooling, and duct sizing.

Superheat & Subcooling chargingDuct sizing & layout calculatorCompressor windings troubleshooter
🔧 Utilities
(185)
free
5
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
HVAC Sizing & Psychrometric
Free

This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.

Duct sizing for round, rectangular, and flexible ductsFittings pressure drop calculationPsychrometric analysis with interactive chart
🔧 Utilities
(7)
free with in-app purchases
6
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
HVAC Tools
Free

This app provides HVAC professionals with quick access to product information, tools, and support. It allows users to check pricing, availability, find locations, and manage warranty claims. Features include a PT calculator, duct calculators, and a flashlight tool for on-site work.

View pricing and order statusReal-time product availabilityFind branch locations and hours
📊 Productivity
(43)
ad-supported
7
Digiduct
Digiduct
Digiduct
Duct-Sizing App
Free

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
🔧 Utilities
(11)
ad-supported
8
Spiralite Duct Sizer
Spiralite Duct Sizer
Spiralite Duct Sizer
by Khansaheb Industries Owned By Khansaheb Investment One Person CO LLC
Free
🔧 Utilities
(0)
9
DuctPro
DuctPro
DuctPro
HVAC Duct Sizing Calculator
Free
🔧 Utilities
(0)
10
Ductalator
Ductalator
Ductalator
HVAC Duct Sizing Calculator
Free
📊 Productivity
(0)
11
AirFlow ProCalc
AirFlow ProCalc
AirFlow ProCalc
HVAC Duct Layout
$9.99
📊 Productivity
(0)
12
Duct Mate: HVAC Duct Sizer
Duct Mate: HVAC Duct Sizer
Duct Mate: HVAC Duct Sizer
Duct Sizing & Airflow Calc
Free
🔧 Utilities
(0)
13
Duct Calculator: HVAC Sizing
Duct Calculator: HVAC Sizing
Duct Calculator: HVAC Sizing
HVAC duct sizing & airflow
Free
🔧 Utilities
(0)
14
Ductulator - Duct Sizing
Ductulator - Duct Sizing
Ductulator - Duct Sizing
HVAC Duct Design Calculator
$3.99

Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.

Instant duct sizingFriction rate or velocity calculationMultiple valid duct dimensions
📊 Productivity
(317)
free
15
DuctSizer Pro
DuctSizer Pro
DuctSizer Pro
by LEONARDO NOVOA
Free

This tool quickly calculates HVAC duct sizes based on airflow and friction loss. It supports various duct shapes and provides key airflow values for field use.

Calculate CFM from duct sizeFind duct sizes from CFMSupports square, round, and oval duct
🔧 Utilities
(2)
free
16
Quietflex Ductulator
Quietflex Ductulator
Quietflex Ductulator
by Goodman Manufacturing L.P.
Free

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
🔧 Utilities
(1)
free
17
WinFab - Sheet Metal Ductulator
WinFab - Sheet Metal Ductulator
WinFab - Sheet Metal Ductulator
by pasquale dipaola
$3.99

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.

Duct sizing calculationAirflow determinationPressure drop calculation
💼 Business
(6)
paid
18
Prihoda
Prihoda
Prihoda
by Příhoda s.r.o.
Free

Calculate air velocities in fabric ducting and diffusers based on airflow and size. Visual color cues indicate velocity suitability, with red for unacceptable and green for suitable. Adjust dimensions and units easily for precise calculations.

Air velocity calculation for fabric ductingVisual suitability indicators (color-coded)Adjustable airflow and duct size
🔧 Utilities
(1)
free
19
PT Ductulator
PT Ductulator
PT Ductulator
Duct Calculator
Free
📊 Productivity
(0)
20
Climcalc Dimensión
Climcalc Dimensión
Climcalc Dimensión
by Compagnie de Saint-Gobain
Free
💼 Business
(0)

FAQ about Ductwork

What are the best ductwork apps for iPhone?
FieldFab tops our ductwork apps ranking as of July 2026, with a 4.4-star average from 65 App Store ratings, and it's free to download.
Yes — 17 of the top ductwork apps we rank are free to download, including FieldFab and SMACNA Duct-U-Lator.
FieldFab has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 233+ ductwork apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
FieldFab is an augmented reality CAD application designed specifically for HVAC installers. It helps them create precise ductwork transitions in the field, streamlining the design and fabrication process.
FieldFab utilizes your iPhone or iPad's camera to let you view your designed ductwork transitions in augmented reality before cutting any sheet metal. This allows for accurate visualization and placement in the actual installation environment.

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