# HVAC Pipe Sizer vs Installer App

The clearest difference is review sentiment: HVAC Pipe Sizer at 100% against Installer App's 53%. HVAC Pipe Sizer also leads on rating (5.0 vs 3.0). Installer App's advantage is price (Free vs $4.99) and update cadence (every 5 weeks vs every 8 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Installer App is free to download; HVAC Pipe Sizer costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Pipe Sizer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 100% of HVAC Pipe Sizer's written reviews are positive against 53% of Installer App's.

HVAC Pipe Sizer ships an update every 8 months, Installer App every 5 weeks. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | Installer App |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-high/id341828523/reviews)** | [3.0 (7 ratings)](https://appshunter.io/ios/app/installer-app/id423984641/reviews) |
| Number of ratings | 3 | **7** |
| Positive reviews | **100.0% of reviews** | 53.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 17 MB | 90 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Danfoss A/S](https://appshunter.io/developer/423984644) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-high/id341828523)

This utility app helps engineers quickly size high-pressure gas piping systems. Input flow, pressure, and pipe properties to calculate diameters, velocity, and equivalent length. Supports English and metric units with built-in tables for various pipe materials.

**Highlights:** High-pressure gas pipe sizing, Input flow, pressure, and pipe parameters, Calculate exact/nominal diameters, Determine velocity and equivalent length, Supports English and metric units, Includes pipe fitting tables, Universal app for iPhone and iPad

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

**In-app purchases:** none


### Installer App

[App page](https://appshunter.io/ios/app/installer-app/id423984641)

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and advanced features to streamline work, including project management and hydronic balancing tools.

**Highlights:** Radiator Presetting, Product Finder, My Projects (Cloud-based), Hydronic Balancing, Flow/Pressure Calculator, Floor Heating Tools, Burner Converter, Magnetic Tool

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $4.99, with no in-app purchases.

### Is Installer App free?

Installer App is free to download, with no in-app purchases.

### Which has better reviews, HVAC Pipe Sizer or Installer App?

HVAC Pipe Sizer is rated higher. HVAC Pipe Sizer averages 5.0 out of 5 from 3 ratings, while Installer App averages 3.0 from 7 ratings.

### Do HVAC Pipe Sizer or Installer App have ads?

Neither HVAC Pipe Sizer nor Installer App shows ads.

### Which is updated more often, HVAC Pipe Sizer or Installer App?

HVAC Pipe Sizer ships an update every 8 months, and Installer App every 5 weeks. Most recently, HVAC Pipe Sizer was updated on October 15, 2026 and Installer App on October 17, 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.*