# DuctChecker vs Duct Construction

The clearest difference is price: Duct Construction at $0.99 against DuctChecker's $6.99. Duct Construction also leads on chart position (#106 vs unranked). DuctChecker's advantage is update cadence (every 4 months vs every 10 months) and iOS requirement (15.0 vs 17.6). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

DuctChecker costs $6.99 and Duct Construction $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DuctChecker ships an update every 4 months, Duct Construction every 10 months. The most recent releases landed on September 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | DuctChecker | Duct Construction |
| --- | --- | --- |
| Price | $6.99 | **$0.99** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/duct-construction/id6443518338/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#106** |
| Size | 23 MB | 1 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## What reviewers say

### DuctChecker

[App page](https://appshunter.io/ios/app/ductchecker/id933593987)

Easily calculate duct dimensions using various engineering methods like constant pressure, static pressure regain, total pressure, and velocity. This tool simplifies complex duct design calculations, typically found in flow diagrams or slide rules.

**Highlights:** Constant pressure method calculation, Static pressure regain method, Total pressure method, Velocity method, Duct dimension determination, Simplified duct design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Duct Construction

[App page](https://appshunter.io/ios/app/duct-construction/id6443518338)

**Currently charting:** #106 Top Paid · Productivity (US App Store)

This app helps determine duct construction and reinforcement options based on duct size and system pressure class. It provides condensed lists of suitable options, saving time spent on manual calculations and table lookups. Results are based on industry standards for galvanized steel duct sheets.

**Highlights:** Duct size range from 2" to 120", Pressure classes up to 4 in.wg, Calculates duct weights per linear foot, Determines required duct gauge and reinforcement spacing, Clear illustrations for reinforcement types, Simple and effective UI design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DuctChecker free?

DuctChecker costs $6.99, with no in-app purchases.

### Is Duct Construction free?

Duct Construction costs $0.99, with no in-app purchases.

### Do DuctChecker or Duct Construction have ads?

Neither DuctChecker nor Duct Construction shows ads.

### Which is updated more often, DuctChecker or Duct Construction?

DuctChecker ships an update every 4 months, and Duct Construction every 10 months. Most recently, DuctChecker was updated on September 7, 2026 and Duct Construction on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*