# HVACsim vs Refrigerant Charge Calculator

The clearest difference is rating: Refrigerant Charge Calculator at 4.7 against HVACsim's 2.2. HVACsim's advantage is iOS requirement (13.4 vs 17.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. HVACsim sells 1 one-off in-app purchase and Refrigerant Charge Calculator sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Refrigerant Charge Calculator holds the better App Store score, 4.7 against 2.2. Both are backed by a comparable volume of ratings — 13 and 26 respectively.

## The numbers

| Metric | HVACsim | Refrigerant Charge Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (13 ratings)](https://appshunter.io/ios/app/hvacsim/id6740935191/reviews) | **[4.7 (26 ratings)](https://appshunter.io/ios/app/refrigerant-charge-calculator/id6762469018/reviews)** |
| Number of ratings | 13 | **26** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 20 MB | 26 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nauman Innovation Group LLC](https://appshunter.io/developer/1764933586) | [Mikhail Nikitin](https://appshunter.io/developer/1826368571) |

## What reviewers say

### HVACsim

[App page](https://appshunter.io/ios/app/hvacsim/id6740935191)

This app offers interactive learning and real-world data analysis to help HVAC professionals diagnose and troubleshoot systems. It provides personalized training plans, skill assessments, and team management tools for contractors.

**Highlights:** Technical Knowledge Evaluator, Individualized Learning Plans, Real-World Data Analysis, Team Management Tools, Continuous Learning Library

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $29.99 | one-time |


### Refrigerant Charge Calculator

[App page](https://appshunter.io/ios/app/refrigerant-charge-calculator/id6762469018)

This tool helps HVAC and refrigeration technicians quickly determine the correct refrigerant charge for various systems. It provides instant verdicts like 'Add,' 'Hold,' or 'Remove' based on superheat or subcooling measurements, supporting numerous refrigerants and unit conversions. The app functions offline and allows for saving job details and generating PDF reports.

**Highlights:** Charge check by superheat, Charge check by subcooling, Line-set charge estimation, Pressure-Temperature reference, Altitude-corrected pressures, Saved jobs with GPS, One-tap PDF job sheets, Offline functionality

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium | $4.99 | per month |
| premium | $29.99 | per year |


## Frequently asked questions

### Is HVACsim free?

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

### Is Refrigerant Charge Calculator free?

Refrigerant Charge Calculator is free to download, with in-app purchases available.

### Which has better reviews, HVACsim or Refrigerant Charge Calculator?

Refrigerant Charge Calculator is rated higher. HVACsim averages 2.2 out of 5 from 13 ratings, while Refrigerant Charge Calculator averages 4.7 from 26 ratings.

### Do HVACsim or Refrigerant Charge Calculator have ads?

Neither HVACsim nor Refrigerant Charge Calculator shows ads.

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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.*