SMACNA Duct vs Unitize
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SMACNA Duct
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 sizing
- Real-time calculation updates
- Converts duct shapes and sizes
- Calculates friction loss
- Determines sizes for given velocity
- User-friendly interface
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The SMACNA Duct-U-Lator is a digital version of the classic duct sizing tool. It is used by HVAC professionals to quickly size rectangular, round, and oval ducts for optimal air flow in ventilation systems. The app simplifies the calculation process, helping users determine duct dimensions based on variables like air volume (CFM), friction loss, and air velocity. Key features include: - **User-friendly Interface**: The app offers a simple, intuitive design that mimics the physical ductulator, allowing for quick inputs and results. - **Multiple Duct Types**: Supports rectangular, round, and oval duct sizing, giving flexibility in various design scenarios. - **Real-time Calculations**: As users adjust inputs, the app instantly updates results, speeding up the design process. - **Enhanced Accuracy**: By automating complex calculations, the app reduces human error and ensures more accurate results compared to manual methods. This app works as a Duct-U-Lator and Pressure Loss (friction) calculator which has the following functions. Converts Duct Shape or Size to Another Determines Sizes for a Given Friction Rate Determines Sizes for a Given Velocity Determines Sizes for a Given Velocity and a Friction Loss Rate (simultaneous output) Determines the Airflow Rate for a Given Size and Friction Loss Rate Calculates Friction Loss The SMACNA iOS Duct-U-Lator is a valuable tool for HVAC engineers, contractors, and technicians looking for a portable and efficient way to perform duct sizing on-site. It combines the convenience of modern technology with SMACNA's trusted guidelines for air distribution system design.
Unitize
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Unitize is an all-in-one platform that brings together HRMS, Task Management, and Attendance into a single seamless system. Manage employees, track tasks, monitor attendance, and streamline operations — all from one powerful dashboard.
Screenshots
Verdict
The clearest difference is iOS requirement: Unitize at 13.0 against SMACNA Duct's 16.2. 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.
| Parameter | SMACNA Duct | Unitize |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 6 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC. | TechnoYug Technologies LLP |
In-app purchases
SMACNA Duct
No in-app purchases
Unitize
No in-app purchases









