# HVAC Toolkit vs Elbow

HVAC Toolkit and Elbow both sit at 5.0 stars, but that hides the real split: 73% of HVAC Toolkit's written reviews are positive against 0% of Elbow's. HVAC Toolkit also leads on in-app purchases (none vs 2). Elbow's advantage is price (Free vs $23.99). On rating, ratings volume, update cadence and ads there is nothing between them.

Elbow is free to download; HVAC Toolkit costs $23.99 up front. Elbow sells 2 in-app purchases, starting at $4.99 per 7 days. HVAC Toolkit asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HVAC Toolkit against 5.0 for Elbow. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews are what separate them: 73% of HVAC Toolkit's written reviews are positive against 0% of Elbow's.

HVAC Toolkit ships an update every 6 months, Elbow every 4 months. The most recent releases landed on September 14, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | HVAC Toolkit | Elbow |
| --- | --- | --- |
| Price | $23.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/hvac-toolkit/id354558963/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/elbow-flat-pattern/id6471258565/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **73.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 50 MB | 58 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## 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


### Elbow

[App page](https://appshunter.io/ios/app/elbow-flat-pattern/id6471258565)

This tool simplifies the creation of accurate flat patterns for elbow fittings in sheet metal fabrication, HVAC, and piping. Input key parameters like angle and dimensions to instantly generate precise calculations for cutting and shaping materials, saving time and reducing errors.

**Highlights:** Calculate inner arc length, Determine elbow angle and cutting dimensions, Support custom angle inputs, Accurate flat pattern development, Quick and reliable results

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |


## Frequently asked questions

### Is HVAC Toolkit free?

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

### Is Elbow free?

Elbow is free to download, with in-app purchases available.

### Which has better reviews, HVAC Toolkit or Elbow?

HVAC Toolkit and Elbow are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do HVAC Toolkit or Elbow have ads?

Neither HVAC Toolkit nor Elbow shows ads.

### Which is updated more often, HVAC Toolkit or Elbow?

HVAC Toolkit ships an update every 6 months, and Elbow every 4 months. Most recently, HVAC Toolkit was updated on September 14, 2026 and Elbow on September 22, 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.*