# BITZER REFRIGERANT RULER vs Refrigerant Calculator

The clearest difference is rating: BITZER REFRIGERANT RULER at 4.6 against Refrigerant Calculator's 4.0. BITZER REFRIGERANT RULER also leads on ratings volume (1.1K vs 3) and review sentiment (64% vs 50%). Refrigerant Calculator's advantage is iOS requirement (10.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BITZER REFRIGERANT RULER holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: BITZER REFRIGERANT RULER has 1.1K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 64% of BITZER REFRIGERANT RULER's written reviews are positive against 50% of Refrigerant Calculator's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | BITZER REFRIGERANT RULER | Refrigerant Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/refrigerant-calculator/id494446830/reviews) |
| Number of ratings | **1.1K** | 3 |
| Positive reviews | **63.6% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | Free |
| Size | 21 MB | 3 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BITZER SE](https://appshunter.io/developer/1224090796) | [Caio Pinheiro](https://appshunter.io/developer/494446833) |

## What reviewers say

### BITZER REFRIGERANT RULER

[App page](https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792)

This tool quickly determines refrigerant data, including properties, safety groups, GWP, and ODP. It offers intuitive temperature-to-pressure conversion and supports both metric and imperial units. Access detailed information and links to online resources for over 100 refrigerants.

**Highlights:** Refrigerant data lookup, Temperature-to-pressure conversion, Metric and imperial unit support, Over 100 refrigerants, Oil type information, GWP and ODP data, Search filters and favorites

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

**In-app purchases:** none

**What reviewers like**

- 👍 Comprehensive refrigerant list
- 🚀 Efficient and easy to use
- 💡 Helpful for HVAC students and professionals

**What reviewers complain about**

- 🐛 Accuracy issues with some refrigerants
- 🔧 Confusing layout and navigation after recent update
- 🔋 Crashes or freezes on some devices

**Reported bugs**

- Incorrect pressure-temperature relationships
- Inconsistent units (PSIA vs PSIG)

**Requested features**

- Altitude adjustment option
- Ability to filter or hide unwanted refrigerants
- Addition of more refrigerant trade names


### Refrigerant Calculator

[App page](https://appshunter.io/ios/app/refrigerant-calculator/id494446830)

This reference tool converts pressure and temperature for industrial refrigeration. It supports common refrigerants like ammonia and freon, allowing professionals to easily calculate values such as overheating for compressors and condensers.

**Highlights:** Pressure to temperature conversion, Temperature to pressure conversion, Supports ammonia R717, Supports freon refrigerants, Calculates overheating, Tool for refrigeration engineers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BITZER REFRIGERANT RULER free?

BITZER REFRIGERANT RULER is free to download, with no in-app purchases.

### Is Refrigerant Calculator free?

Refrigerant Calculator is free to download, with no in-app purchases.

### Which has better reviews, BITZER REFRIGERANT RULER or Refrigerant Calculator?

BITZER REFRIGERANT RULER is rated higher. BITZER REFRIGERANT RULER averages 4.6 out of 5 from 1.1K ratings, while Refrigerant Calculator averages 4.0 from 3 ratings.

### Do BITZER REFRIGERANT RULER or Refrigerant Calculator have ads?

Neither BITZER REFRIGERANT RULER nor Refrigerant Calculator shows ads.

### Which is updated more often, BITZER REFRIGERANT RULER or Refrigerant Calculator?

BITZER REFRIGERANT RULER ships an update every 4 months, and Refrigerant Calculator every 4 months. Most recently, BITZER REFRIGERANT RULER was updated on October 24, 2026 and Refrigerant Calculator on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*