# HVAC Toolkit Ultimate vs Pipe Sizer

The clearest difference is review sentiment: Pipe Sizer at 100% against HVAC Toolkit Ultimate's 40%. Pipe Sizer also leads on price ($12.99 vs $59.99) and rating (4.8 vs 3.0). HVAC Toolkit Ultimate's advantage is update cadence (every 6 months vs every 17 months) and iOS requirement (13.0 vs 16.6). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

HVAC Toolkit Ultimate costs $59.99 and Pipe Sizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pipe Sizer holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews point the same way: 40% of HVAC Toolkit Ultimate's written reviews are positive against 100% of Pipe Sizer's.

HVAC Toolkit Ultimate ships an update every 6 months, Pipe Sizer every 17 months. The most recent releases landed on August 27, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | HVAC Toolkit Ultimate | Pipe Sizer |
| --- | --- | --- |
| Price | $59.99 | **$12.99** |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/hvac-toolkit-ultimate/id391408247/reviews) | **[4.8 (10 ratings)](https://appshunter.io/ios/app/pipe-sizer-water/id1316033381/reviews)** |
| Number of ratings | 4 | **10** |
| Positive reviews | 40.0% 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 | 59 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 Ultimate

[App page](https://appshunter.io/ios/app/hvac-toolkit-ultimate/id391408247)

This comprehensive application offers a suite of tools for HVAC professionals, including load calculations, equipment tracking, refrigerant charts, duct and pipe sizing, and psychrometric analysis. It consolidates multiple functionalities into a single, powerful utility for field and office use.

**Highlights:** Residential load calculations, Equipment nameplate data tracking, Refrigerant pressure-temperature charts, Superheat and subcool calculations, Duct and pipe sizing analysis, Psychrometric calculations, Steam table property calculations

**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 Ultimate free?

HVAC Toolkit Ultimate costs $59.99, 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 Ultimate or Pipe Sizer?

Pipe Sizer is rated higher. HVAC Toolkit Ultimate averages 3.0 out of 5 from 4 ratings, while Pipe Sizer averages 4.8 from 10 ratings.

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

Neither HVAC Toolkit Ultimate nor Pipe Sizer shows ads.

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

HVAC Toolkit Ultimate ships an update every 6 months, and Pipe Sizer every 17 months. Most recently, HVAC Toolkit Ultimate was updated on August 27, 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.*