Comparison

AI Ductulator vs Digiduct

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AI Ductulator

This application serves as a duct sizing calculator for HVAC professionals and enthusiasts. It provides quick and accurate calculations for duct dimensions based on various parameters.

Highlights
  • Duct sizing calculations
  • HVAC parameter input
  • Accurate dimension results
  • User-friendly interface
Features
Currently charting
Read full description

Duct sizing Calculator.

About

Digiduct

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.

Highlights
  • Duct sizing for rectangular, round, and flat oval ducts
  • Customizable dimensions with locked values
  • Duct location intelligence for context-aware sizing
  • Calculations based on CFM, pressure drop, or velocity
  • Alerts for exceeding pressure drop or velocity limits
Features
Read full description

The Digiduct app is a powerful tool designed for HVAC professionals, supporting everything from design calculations to real-time field verification. Built utilizing the equations and recommendations from the ASHRAE Fundamentals – Duct Design chapter, it ensures your calculations are accurate and reliable, saving you time and reducing errors. Key Features: • Multiple Shape Sizing Options: Supports sizing for rectangular, round, and flat oval ducts, offering flexibility for various duct designs. • Customizable Dimensions: For rectangular and oval ducts, users can lock in one dimension, and the app calculates the other, ensuring precise results based on CFM, pressure drop due to friction, or velocity. • Duct Location Intelligence: offers the user predefined parameters to use as starting point and reference when selecting duct sizes so users at HVAC experience level can make confident selections. Why Choose Digiduct? Unlike other duct sizing tools, Digiduct goes above and beyond. It doesn’t just provide basic size outputs—it evaluates the location and context of your duct (high-pressure vs. low-pressure, shaft vs. plenum), alerting you if your selection exceeds maximum pressure drop or velocity limits. This added layer of intelligence ensures higher accuracy and gives users confidence that their sizing is optimal for the application. Get the assurance of precision with Digiduct—designed to meet the demands of real-world HVAC scenarios.

Screenshots

AI Ductulator2 screens
Digiduct4 screens

Verdict

The call

The clearest difference is price: Digiduct at Free against AI Ductulator's $3.99. Digiduct also leads on rating (4.6 vs 3.9) and update cadence (every 2 months vs every 52 months). AI Ductulator's advantage is chart position (#68 vs unranked) and iOS requirement (13.0 vs 26.2). On ratings volume, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Digiduct is free to download; AI Ductulator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Digiduct holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 9 and 11 respectively.

UpkeepUpdate frequency

AI Ductulator ships an update every 52 months, Digiduct every 2 months. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 5 level
AI Ductulator versus Digiduct: the parameters behind the verdict, then further details
ParameterAI DuctulatorDigiduct
Price$3.99Free — better
Rating3.9 (9 ratings)4.6 (11 ratings) — better
Positive reviews42.9% of reviews—
Number of ratings911 — better
Update frequencyEvery 52 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidAd-supported — better
Best chart rank#68 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.2
Further details — not scored
Size89 MB4 MB
Age rating4+4+
Developerpasquale dipaolaSyska Hennessy Group

Customer experience

AI Ductulator

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews7 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

Digiduct

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%

In-app purchases

None

AI Ductulator

No in-app purchases

None

Digiduct

No in-app purchases

Questions

Is AI Ductulator free?
AI Ductulator costs $3.99, with no in-app purchases.
Is Digiduct free?
Digiduct is free to download, with no in-app purchases.
Which has better reviews, AI Ductulator or Digiduct?
Digiduct is rated higher. AI Ductulator averages 3.9 out of 5 from 9 ratings, while Digiduct averages 4.6 from 11 ratings.
Do AI Ductulator or Digiduct have ads?
Neither AI Ductulator nor Digiduct shows ads.
Which is updated more often, AI Ductulator or Digiduct?
AI Ductulator ships an update every 52 months, and Digiduct every 2 months. Most recently, AI Ductulator was updated on October 13, 2026 and Digiduct on October 1, 2026.

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