# HVAC Pipe Sizer vs Heating Pipe Size

The clearest difference is in-app purchases: Heating Pipe Size at none against HVAC Pipe Sizer's 1. HVAC Pipe Sizer's advantage is update cadence (every 6 months vs every 15 months) and chart position (#196 vs unranked). On ads and device support there is nothing between them.

HVAC Pipe Sizer costs $4.99 and Heating Pipe Size $5.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Heating Pipe Size asks for nothing beyond the download.

HVAC Pipe Sizer ships an update every 6 months, Heating Pipe Size every 15 months. Both last shipped on September 9, 2026.

## The numbers

| Metric | HVAC Pipe Sizer | Heating Pipe Size |
| --- | --- | --- |
| Price | **$4.99** | $5.99 |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 15 months |
| Monetization | Paid | — |
| Best chart rank | **#196** | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Sebastjan Valic](https://appshunter.io/developer/503687385) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065)

**Currently charting:** #196 Top Paid · Productivity (US App Store)

Calculate pipe sizes for liquid systems, including hot and chilled water. Input flow rate, head loss, diameter, or velocity to determine other properties. Supports various liquids, pipe materials, and fittings, with English or metric units.

**Highlights:** Liquid pipe sizing, Hydronic system calculations, Input flow, head loss, diameter, or velocity, Calculate fluid flow and head loss, Supports various liquids and pipe materials, English and metric unit options, Email results

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

**In-app purchases (1)**

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


### Heating Pipe Size

[App page](https://appshunter.io/ios/app/heating-pipe-size/id527730872)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $4.99, and also offers in-app purchases.

### Is Heating Pipe Size free?

Heating Pipe Size costs $5.99, with no in-app purchases.

### Do HVAC Pipe Sizer or Heating Pipe Size have ads?

Neither HVAC Pipe Sizer nor Heating Pipe Size shows ads.

### Which is updated more often, HVAC Pipe Sizer or Heating Pipe Size?

HVAC Pipe Sizer ships an update every 6 months, and Heating Pipe Size every 15 months. Most recently, HVAC Pipe Sizer was updated on September 9, 2026 and Heating Pipe Size on September 9, 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.*