# HVAC Toolkit vs Pipe Sizer

The clearest difference is price: Pipe Sizer at $12.99 against HVAC Toolkit's $23.99. Pipe Sizer also leads on review sentiment (100% vs 73%) and ratings volume (10 vs 2). HVAC Toolkit's advantage is update cadence (every 6 months vs every 17 months) and rating (5.0 vs 4.8). On ads, in-app purchases, monetization model and device support there is nothing between them.

HVAC Toolkit costs $23.99 and Pipe Sizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Toolkit holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Pipe Sizer has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 73% of HVAC Toolkit's written reviews are positive against 100% of Pipe Sizer's, so the app with the better star average is not the one people write more warmly about.

HVAC Toolkit ships an update every 6 months, Pipe Sizer every 17 months. The most recent releases landed on September 14, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | HVAC Toolkit | Pipe Sizer |
| --- | --- | --- |
| Price | $23.99 | **$12.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hvac-toolkit/id354558963/reviews)** | [4.8 (10 ratings)](https://appshunter.io/ios/app/pipe-sizer-water/id1316033381/reviews) |
| Number of ratings | 2 | **10** |
| Positive reviews | 73.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 50 MB | 2 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Pheinex, LLC](https://appshunter.io/developer/996932317) |

## What reviewers say

### HVAC Toolkit

[App page](https://appshunter.io/ios/app/hvac-toolkit/id354558963)

This comprehensive toolkit offers essential HVAC calculations and tools for professionals. It combines multiple specialized applications into a single, convenient package for iPhone and iPad users.

**Highlights:** Equipment tracking and customization, Refrigerant pressure-temperature charts, Refrigerant charge calculations, Duct sizing, Cooling and heating load calculations, Psychrometric calculations, Steam tables, Pipe sizing for liquid, steam, and gas

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

**In-app purchases:** none


### Pipe Sizer

[App page](https://appshunter.io/ios/app/pipe-sizer-water/id1316033381)

This app helps water piping system engineers and designers quickly and accurately design and analyze piping systems. It offers direct input for flow, friction, or velocity, with live calculation updates and support for various units and pipe materials.

**Highlights:** Quickly size new piping systems, Analyze existing piping systems, Direct input for flow, friction, or velocity, Live calculation updates, Supports SI and IP units, Works with steel, copper, and PVC pipes, Includes fluid data for water and glycols

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Toolkit free?

HVAC Toolkit costs $23.99, with no in-app purchases.

### Is Pipe Sizer free?

Pipe Sizer costs $12.99, with no in-app purchases.

### Which has better reviews, HVAC Toolkit or Pipe Sizer?

HVAC Toolkit is rated higher. HVAC Toolkit averages 5.0 out of 5 from 2 ratings, while Pipe Sizer averages 4.8 from 10 ratings.

### Do HVAC Toolkit or Pipe Sizer have ads?

Neither HVAC Toolkit nor Pipe Sizer shows ads.

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

HVAC Toolkit ships an update every 6 months, and Pipe Sizer every 17 months. Most recently, HVAC Toolkit was updated on September 14, 2026 and Pipe Sizer on September 20, 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.*