# Offset Calc App ANSI vs Duct Construction

The clearest difference is review sentiment: Offset Calc App ANSI at 100% against Duct Construction's 0%. Offset Calc App ANSI also leads on rating (5.0 vs 1.0) and update cadence (monthly vs every 10 months). Duct Construction's advantage is price ($0.99 vs $6.99). On ads, in-app purchases, monetization model and chart position there is nothing between them.

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

Offset Calc App ANSI holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Offset Calc App ANSI has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Offset Calc App ANSI's written reviews are positive against 0% of Duct Construction's.

Offset Calc App ANSI ships an update monthly, Duct Construction every 10 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Offset Calc App ANSI | Duct Construction |
| --- | --- | --- |
| Price | $6.99 | **$0.99** |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/offset-calc-app-ansi/id1463259532/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/duct-construction/id6443518338/reviews) |
| Number of ratings | **19** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 10 months |
| Monetization | Paid | Paid |
| Best chart rank | #200 | **#194** |
| Size | 95 MB | 1 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Steffen Weber](https://appshunter.io/developer/1456703068) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## What reviewers say

### Offset Calc App ANSI

[App page](https://appshunter.io/ios/app/offset-calc-app-ansi/id1463259532)

**Currently charting:** #200 Top Paid · Productivity (US App Store)

This industrial pipe construction tool calculates pipe offsets and weights according to ANSI/ASME standards. It offers imperial and metric calculations for various pipe sizes and fittings, helping users save material, time, and stress.

**Highlights:** Imperial and metric offset calculations, Pipe and profile weight calculations, ANSI/ASME standard nominal diameters, Calculation with length or elbow angle, Offsets with tee, History of calculations

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

**In-app purchases:** none


### Duct Construction

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

**Currently charting:** #194 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 Offset Calc App ANSI free?

Offset Calc App ANSI costs $6.99, with no in-app purchases.

### Is Duct Construction free?

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

### Which has better reviews, Offset Calc App ANSI or Duct Construction?

Offset Calc App ANSI is rated higher. Offset Calc App ANSI averages 5.0 out of 5 from 19 ratings, while Duct Construction averages 1.0 from 1 ratings.

### Do Offset Calc App ANSI or Duct Construction have ads?

Neither Offset Calc App ANSI nor Duct Construction shows ads.

### Which is updated more often, Offset Calc App ANSI or Duct Construction?

Offset Calc App ANSI ships an update monthly, and Duct Construction every 10 months. Most recently, Offset Calc App ANSI was updated on September 21, 2026 and Duct Construction on September 9, 2026.

### Which is more popular, Offset Calc App ANSI or Duct Construction?

Offset Calc App ANSI currently peaks at #200 in the App Store charts, and Duct Construction at #194. Chart position reflects recent download velocity rather than total install base.

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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.*