Izoler Pro vs Duct Calculator Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Izoler Pro
This application provides essential shapes for professionals in the plastics, metals, and insulation industries. It serves as a digital tool for design and manufacturing processes.
- Shapes for plastics industry
- Shapes for metals industry
- Shapes for insulation industry
- Digital design tool
Read full descriptionHide full description
Shapes used in plastics, metals and insulation industries
Duct Calculator Pro
This tool assists HVAC professionals and students with quick and precise calculations for duct sizing, airflow velocity, and airflow rate. It works offline and features a user-friendly interface for efficient project work.
- Duct size calculation
- Airflow velocity (FPM) calculation
- Airflow rate (CFM) calculation
- Rectangular and round duct support
- Offline functionality
- Ad-free experience
Read full descriptionHide full description
Duct Calculator is a simple, fast, and accurate tool designed for HVAC engineers, designers, technicians, and students. This app helps you calculate duct size, airflow velocity (FPM), and airflow rate (CFM) for both rectangular and round ducts with ease. Whether you are working on Heating, Ventilation, or Air Conditioning projects, this app provides quick calculations without requiring internet access. Key Features • No Internet Required – Works completely offline. • No Irritating Ads – Clean and smooth user experience. • Fast & Accurate Calculations – Built for HVAC professionals. • User-Friendly Interface – Simple layout for quick results. Available Calculators Duct Size Calculator Enter airflow rate (CFM) and airflow velocity (FPM) to get recommended rectangular and round duct sizes in inches. CFM Calculator Enter duct dimensions (length, width, or diameter in inches) and airflow velocity (FPM) to calculate airflow rate (CFM). FPM Calculator Enter duct size and airflow rate (CFM) to calculate airflow velocity (FPM). Who Should Use This App? Perfect for: • HVAC Engineers • Designers & Fabricators • Site Technicians • Students learning HVAC fundamentals
Screenshots
Verdict
The clearest difference is price: Duct Calculator Pro at $3.99 against Izoler Pro's $33.99. Izoler Pro's advantage is update cadence (every 5 weeks vs every 72 months) and iOS requirement (8.0 vs 18.5). On ads, in-app purchases, monetization model 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
Izoler Pro costs $33.99 and Duct Calculator Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Izoler Pro ships an update every 5 weeks, Duct Calculator Pro every 72 months. The most recent releases landed on October 5, 2026 and October 25, 2026 respectively.
| Parameter | Izoler Pro | Duct Calculator Pro |
|---|---|---|
| Price | $33.99 | $3.99 — better |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 weeks — better | Every 72 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 24 MB | 1 MB |
| Age rating | +4 | 4+ |
| Developer | Rafal Grobelny | Imran Pinjara |
Customer experience
Izoler Pro
Duct Calculator Pro
In-app purchases
Izoler Pro
No in-app purchases
Duct Calculator Pro
No in-app purchases
Questions
Is Izoler Pro free?
Is Duct Calculator Pro free?
Do Izoler Pro or Duct Calculator Pro have ads?
Which is updated more often, Izoler Pro or Duct Calculator Pro?
Other comparisons
