# HVAC Pipe Sizer vs Seitron Smart Analysis

HVAC Pipe Sizer and Seitron Smart Analysis both sit at 5.0 stars, but that hides the real split: 80% of HVAC Pipe Sizer's written reviews are positive against 0% of Seitron Smart Analysis's. HVAC Pipe Sizer also leads on chart position (#197 vs unranked). Seitron Smart Analysis's advantage is price (Free vs $7.99) and in-app purchases (none vs 1). On rating, ratings volume, ads and device support there is nothing between them.

Seitron Smart Analysis is free to download; HVAC Pipe Sizer costs $7.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Seitron Smart Analysis asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HVAC Pipe Sizer against 5.0 for Seitron Smart Analysis. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 80% of HVAC Pipe Sizer's written reviews are positive against 0% of Seitron Smart Analysis's.

HVAC Pipe Sizer ships an update every 12 months, Seitron Smart Analysis weekly. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | Seitron Smart Analysis |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/seitron-smart-analysis/id1449017796/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **80.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | Paid | **Free** |
| Best chart rank | **#197** | — |
| Size | 18 MB | 70 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Seitron Spa](https://appshunter.io/developer/1222487753) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204)

**Currently charting:** #197 Top Paid · Productivity (US App Store)

Calculate gas piping systems for low and high pressure. Input flow, pressure, or diameter to find pipe sizes, velocity, and equivalent lengths. Supports English and metric units, with extensive pipe fitting data.

**Highlights:** Low and high pressure gas pipe sizing, Calculate flow, pressure drop, diameter, and velocity, Universal app for iPhone and iPad, English and metric unit support, Built-in pipe fitting equivalent length tables, Slider controls for quick adjustments

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### Seitron Smart Analysis

[App page](https://appshunter.io/ios/app/seitron-smart-analysis/id1449017796)

Connect to your combustion analyzer via Bluetooth to view live data, start analyses, and generate reports in various formats. Store and print your findings directly from your smartphone or tablet.

**Highlights:** Bluetooth connectivity, Live analysis data display, Start analysis remotely, Generate CSV, PDF, XML reports, Store analysis data, Print analysis reports

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $7.99, and also offers in-app purchases.

### Is Seitron Smart Analysis free?

Seitron Smart Analysis is free to download, with no in-app purchases.

### Which has better reviews, HVAC Pipe Sizer or Seitron Smart Analysis?

HVAC Pipe Sizer and Seitron Smart Analysis are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do HVAC Pipe Sizer or Seitron Smart Analysis have ads?

Neither HVAC Pipe Sizer nor Seitron Smart Analysis shows ads.

### Which is updated more often, HVAC Pipe Sizer or Seitron Smart Analysis?

HVAC Pipe Sizer ships an update every 12 months, and Seitron Smart Analysis weekly. Most recently, HVAC Pipe Sizer was updated on October 12, 2026 and Seitron Smart Analysis on October 13, 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.*