# BITZER REFRIGERANT RULER vs iFixCompressors

The clearest difference is rating: iFixCompressors at 4.9 against BITZER REFRIGERANT RULER's 4.6. BITZER REFRIGERANT RULER's advantage is ratings volume (1.1K vs 44). On price, review sentiment, update cadence and ads there is nothing between them.

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

iFixCompressors holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: BITZER REFRIGERANT RULER has 1.1K ratings behind it against 44, so its average is the more settled of the two. Written reviews complicate that: 64% of BITZER REFRIGERANT RULER's written reviews are positive against 60% of iFixCompressors's, so the app with the better star average is not the one people write more warmly about.

BITZER REFRIGERANT RULER ships an update every 4 months, iFixCompressors every 3 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | BITZER REFRIGERANT RULER | iFixCompressors |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792/reviews) | **[4.9 (44 ratings)](https://appshunter.io/ios/app/ifixcompressors/id868938158/reviews)** |
| Number of ratings | **1.1K** | 44 |
| Positive reviews | **63.6% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 21 MB | 6 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BITZER SE](https://appshunter.io/developer/1224090796) | [Michael Diehl](https://appshunter.io/developer/387643641) |

## 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


### iFixCompressors

[App page](https://appshunter.io/ios/app/ifixcompressors/id868938158)

This app provides technicians with essential data, calculations, and reference materials for complex compressor systems. It offers tools for password management, altitude correction, unit conversions, and maintenance scheduling, aiming to improve efficiency and accuracy.

**Highlights:** Controller password journal with export, Altitude correction with GPS/Barometer, U.S. Customary and SI unit support, Quick conversions for pressure, temp, flow, Maintenance schedule and glossary, Electrical symbols and motor FLA chart

**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 iFixCompressors free?

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

### Which has better reviews, BITZER REFRIGERANT RULER or iFixCompressors?

iFixCompressors is rated higher. BITZER REFRIGERANT RULER averages 4.6 out of 5 from 1.1K ratings, while iFixCompressors averages 4.9 from 44 ratings.

### Do BITZER REFRIGERANT RULER or iFixCompressors have ads?

Neither BITZER REFRIGERANT RULER nor iFixCompressors shows ads.

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

BITZER REFRIGERANT RULER ships an update every 4 months, and iFixCompressors every 3 months. Most recently, BITZER REFRIGERANT RULER was updated on October 24, 2026 and iFixCompressors on October 23, 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.*