ChekDuct vs DuctSizer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChekDuct
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Struggling to read your ductulator? Chekduct is a straightforward, reliable duct calculator built specifically for HVAC installers, service techs, and sheet metal fabricators who need info quick. Whether you’re troubleshooting an airflow issue on a service call or sizing duct for a new install, Chekduct handles the math so you don't have to
DuctSizer Pro
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 size
- Find duct sizes from CFM
- Supports square, round, and oval duct
- Shows velocity, friction, area, and equivalent round size
- Highlights suggested duct sizes
- Compares alternate duct sizes
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DuctSizer Pro is a fast HVAC duct sizing calculator built for field use. Enter duct dimensions and friction to calculate CFM, or enter CFM and friction to find suggested duct sizes. The app supports square, round, and oval ductwork and shows key airflow values such as velocity, friction, area, and equivalent round size. Features: - Calculate CFM from duct size - Find duct sizes from CFM - Supports square, round, and oval duct - Shows velocity, friction, area, and equivalent round size - Highlights suggested duct sizes - Compares alternate duct sizes for the same airflow DuctSizer Pro is designed as a quick reference tool for HVAC layout, estimating, and field calculations.
Screenshots
Verdict
The clearest difference is in-app purchases: ChekDuct at none against DuctSizer Pro's 1. ChekDuct also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price and ads 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. DuctSizer Pro sells 1 one-off in-app purchase. ChekDuct asks for nothing beyond the download.
| Parameter | ChekDuct | DuctSizer Pro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 187 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Mohamed Kharbat | LEONARDO NOVOA |
In-app purchases
ChekDuct
No in-app purchases
DuctSizer Pro
- Catalog Pro$2.99
Questions
Is ChekDuct free?
Is DuctSizer Pro free?
Do ChekDuct or DuctSizer Pro have ads?
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