# AGA vs Duct Construction

The clearest difference is chart position: Duct Construction at #186 against AGA's unranked. AGA's advantage is iOS requirement (15.6 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

AGA ships an update every 15 months, Duct Construction every 10 months. The most recent releases landed on October 14, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | AGA | Duct Construction |
| --- | --- | --- |
| Price | $0.99 | $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 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 10 months** |
| Monetization | — | Paid |
| Best chart rank | — | **#186** |
| Size | 1 MB | 1 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Bjarne Berge](https://appshunter.io/developer/1209858941) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## What reviewers say

### AGA

[App page](https://appshunter.io/ios/app/aga-3-orifice/id1350504597)

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

**In-app purchases:** none


### Duct Construction

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

**Currently charting:** #186 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 AGA free?

AGA costs $0.99, with no in-app purchases.

### Is Duct Construction free?

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

### Do AGA or Duct Construction have ads?

Neither AGA nor Duct Construction shows ads.

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

AGA ships an update every 15 months, and Duct Construction every 10 months. Most recently, AGA was updated on October 14, 2026 and Duct Construction on October 27, 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.*