Digiduct vs Education Is KEY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Education Is KEY
This tool provides firefighters with essential hose data and calculations, including friction loss, GPM, and nozzle pressure. It also serves as a product catalog for hose specifications and helps locate local product experts.
- Friction loss calculator
- GPM and nozzle pressure reference
- Key Hose product catalog
- Local product expert finder
- Fire service interface
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Education Is KEY – Friction Loss Calculator & Hose Resource Tool Firefighting demands precision. The Education Is KEY app delivers it. Designed for firefighters, instructors, and procurement teams alike, this powerful tool puts essential hose data and calculations right in your pocket. From the fireground to the classroom, you can quickly and accurately calculate friction loss, GPM, and nozzle pressure. But this app does more than math—it’s also a complete resource for Key Hose product specs, a searchable product catalog, and even a tool to help you find your local product expert. Key Features: • Easy-to-use friction loss calculator • Quick reference for GPM and nozzle pressure • Full Key Hose product catalog with specs and details • Instantly find your local product expert • Clean interface, built for real-world fire service use Whether you're flowing water or just flowing through training, Education Is KEY helps you work smarter, train better, and make confident, informed decisions. Train with it. Work with it. Rely on it. Because when knowledge matters most—Education Is KEY.
Screenshots
Verdict
The clearest difference is rating: Digiduct at 4.6 against Education Is KEY's 4.0. Digiduct also leads on update cadence (every 2 months vs every 5 months) and ratings volume (11 vs 3). Education Is KEY's advantage is monetization model (free vs ad-supported) and iOS requirement (16.4 vs 26.2). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Digiduct holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 11 and 3 respectively.
Digiduct ships an update every 2 months, Education Is KEY every 5 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | Digiduct | Education Is KEY |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (11 ratings) — better | 4.0 (3 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 11 — better | 3 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.2 | 16.4 — better |
| Further details — not scored | ||
| Size | 4 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Syska Hennessy Group | KFH Industries, INC |
Customer experience
Digiduct
Education Is KEY
In-app purchases
Digiduct
No in-app purchases
Education Is KEY
No in-app purchases
Questions
Is Digiduct free?
Is Education Is KEY free?
Which has better reviews, Digiduct or Education Is KEY?
Do Digiduct or Education Is KEY have ads?
Which is updated more often, Digiduct or Education Is KEY?
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