# HVAC Pipe Sizer Plus vs Duct Calculator Elite

The clearest difference is rating: Duct Calculator Elite at 4.8 against HVAC Pipe Sizer Plus's 3.0. Duct Calculator Elite also leads on ratings volume (234 vs 1) and price ($9.99 vs $13.99). HVAC Pipe Sizer Plus's advantage is review sentiment (67% vs 50%). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

HVAC Pipe Sizer Plus costs $13.99 and Duct Calculator Elite $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Duct Calculator Elite holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Duct Calculator Elite has 234 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 67% of HVAC Pipe Sizer Plus's written reviews are positive against 50% of Duct Calculator Elite's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 15 months. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer Plus | Duct Calculator Elite |
| --- | --- | --- |
| Price | $13.99 | **$9.99** |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-plus/id352069594/reviews) | **[4.8 (234 ratings)](https://appshunter.io/ios/app/duct-calculator-elite/id665701601/reviews)** |
| Number of ratings | 1 | **234** |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | Every 15 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#188** |
| Size | 2 MB | 13 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Cyberprodigy LLC](https://appshunter.io/developer/510284906) |

## What reviewers say

### HVAC Pipe Sizer Plus

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-plus/id352069594)

This utility app combines three specialized pipe sizing tools for HVAC systems: liquid, steam, and gas. It offers flexible input options, unit conversions, and an equipment locator for comprehensive HVAC design.

**Highlights:** Liquid pipe sizing, Steam pipe sizing with steam table calculator, Gas pipe sizing (low and high pressure), HVAC Equipment Locator, Slider controls for input adjustments, English and Metric unit display

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

**In-app purchases:** none


### Duct Calculator Elite

[App page](https://appshunter.io/ios/app/duct-calculator-elite/id665701601)

**Currently charting:** #188 Top Paid · Utilities (US App Store)

This app simplifies HVAC duct sizing calculations. It computes duct size, velocity, pressure drop, and flow rate with an intuitive interface. Supports various units and duct materials for precise HVAC design.

**Highlights:** Calculate duct size, velocity, pressure drop, flow rate, Duct Size by Airflow mode, Duct Size by Dimension mode, Pressure Drop calculations, Customizable units and duct materials, Uses ASHRAE Handbook friction loss equations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer Plus free?

HVAC Pipe Sizer Plus costs $13.99, with no in-app purchases.

### Is Duct Calculator Elite free?

Duct Calculator Elite costs $9.99, with no in-app purchases.

### Which has better reviews, HVAC Pipe Sizer Plus or Duct Calculator Elite?

Duct Calculator Elite is rated higher. HVAC Pipe Sizer Plus averages 3.0 out of 5 from 1 ratings, while Duct Calculator Elite averages 4.8 from 234 ratings.

### Do HVAC Pipe Sizer Plus or Duct Calculator Elite have ads?

Neither HVAC Pipe Sizer Plus nor Duct Calculator Elite shows ads.

### Which is updated more often, HVAC Pipe Sizer Plus or Duct Calculator Elite?

HVAC Pipe Sizer Plus ships an update every 15 months, and Duct Calculator Elite every 15 months. Most recently, HVAC Pipe Sizer Plus was updated on October 27, 2026 and Duct Calculator Elite on October 29, 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.*