# BITZER REFRIGERANT RULER — Determine refrigerant data

> Refrigerant data and temperature-to-pressure conversion tool. (iPhone/iPad app by BITZER SE.)

- Source: https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792 (this page in markdown: same URL + `.md`)
- Developer: [BITZER SE](https://appshunter.io/developer/1224090796)
- Category: Reference, Productivity
- Price: Free
- Rating: 4.60/5 from 1,112 App Store ratings · 120 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 21 MB
- Languages: American English, German (Germany)
- Released: 2010-05-27
- Data updated: 2026-08-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792/reviews.md

## What is BITZER REFRIGERANT RULER?

The BITZER REFRIGERANT RULER enables easy and fast determination of refrigerant data. The app contains all common refrigerants, including key fluid properties, safety group information, global warming potential (GWP), ozone depletion potential (ODP), and information on choice of oil type for the compressor. Furthermore, additional information on refrigerants, links to relevant online documents and other information are displayed (under "More..." in the menu bar). The tool provides an intuitive user interface for easy and accurate temperature-to-pressure conversion, while allowing easy use and switching between different metric (SI) and imperial (IP) units (under "Settings").

// CURRENTLY AVAILABLE REFRIGERANTS //

▸ The app contains data and information on more than 100 natural and synthetic refrigerants, which can also be preselected by filter functions (under "Search").

▸ For comparison purposes and also for practical use in service and operation of older existing systems, information on previously used refrigerants, which may have been affected by usage restrictions, are also provided.

// MAIN FUNCTIONS //

▸ Search filters and favourites: Under the navigation item "Search" or via predetermined "Search filters" or manual entry in the text field the appropriate refrigerant can be found and, if necessary, added to the favourites by tapping the "star symbol". With a simple touch on the selected refrigerant, the slider for the pressure-temperature conversion is displayed.

▸ Ruler: By means of a slider, the values of pressure, dew and boiling (bubble) temperatures (temperature glide resulting from the difference) for the selected refrigerant can be determined. Pressure and temperature values can also be entered manually - either by tapping on the respective field or via the symbol "123". When installing the app overpressure values are preset. With this setting, the atmospheric pressure can be entered either manually on the upper ruler or via the "barometer symbol" to correct the pressure values. A change to absolute pressure values is possible under "Settings", the atmospheric pressure correction is then inactive. Further function: By tapping on the refrigerant name, direct access to "Search" (refrigerant list and search filters) is also possible.

▸ Settings: Under this menu all important parameters for the determination of the atmospheric pressure as well as for temperature and pressure values can be adjusted. Other functions allow for a change to default settings and a repeated display of the “Tutorials” in the ruler view.

▸ Automatic Barometer: The app offers the possibility to determine the current altitude above sea level and/or the actual atmospheric pressure to correct the corresponding dew and bubble temperatures in case of overpressure settings. Depending on the configuration, the analysis for the location in question is optionally carried out automatically via GPS or barometer if the corresponding terminal has the aforementioned sensors. Manually entering the atmospheric pressure or correction is possible as described under “Slider control”.

▸ Temperature / pressure: Temperature and pressure units can be freely selected and combined, if necessary, a mix of SI and IP units is possible as well. For overpressure (or negative pressure) bar (g) or psig / inHg can be selected. In the Setting psig / inHg displays the overpressure values in "psig" and the negative pressure values in "negative inHg" (e.g., -7.5 inHg).

▸ Further information on refrigerants: General and additional information can be found under the information symbol "i" in the header next to the refrigerant name. These include, for example, GWP and ODP values for the refrigerants, safety group, chemical composition or components in mixtures, CAS number, molecular weight, triple and boiling (bubble) points, critical temperature, critical pressure and information on the type of oil for the compressor.

## Key features

- 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

## What do users think of BITZER REFRIGERANT RULER?

Overall sentiment: negative

**Pros**

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

**Cons**

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

**Commonly reported bugs**

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

**Most requested features**

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

## Recent user reviews (10 of 120)

All indexed reviews: https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792/reviews.md

### 1/5 — App is tooo slowly

*2025-05-23, version 3.4.0*

The app layout and functionality would be good but it hardly ever loads and is slow to respond
And yes I have tried to use many times in many places

### 3/5 — I like the App

*2024-08-15, version 3.4.0*

I hope some one from the Tech department reads this feedback. 
Intermittently, I have been having a problem with the app not responding. Only get the cover page but the app won’t start up. I’m using a iPhone 11 Pro
This issue is intermittent.
I do like the app when it does work

### 3/5 — Verbesserung

*2024-02-20, version 3.4.0*

Kältemittel Typ sollte im Schieber oben immer zu sehen sein!!!!

### 4/5 — 냉매

*2023-03-10, version 3.4.0*

각 냉매별 몰리엘선도를 열람할수 있다면 좋을것 같아요~

### 1/5 — Funktioniert nicht mehr

*2023-02-15, version 3.4.0*

Trotz Update bleibt die App im ladebildschirm hängen.

### 1/5 — Review

*2022-06-18, version 3.3.0*

Stop trying to fix what is not broken. What was wrong with the previous platform ?

### 3/5 — Up date has improved app

*2021-07-13, version 3.0.3*

I’m glad to see you can pick and choose refrigerants again

### 5/5 — Great app, but it won’t always open

*2021-06-24, version 3.0.3*

I love this app, however, it doesn’t away want to open getting stuck on the opening screen for up to 15-20 minutes for some reason.

### 1/5 — Won’t open

*2021-06-14, version 3.0.3*

My Bitzer app was not opening. I deleted the app and reinstalled. Now it just ask to be track stats  ( I accepted) and to use location (I accepted). The app then closes immediately. I miss the app. I’m using iPhone 8 with the latest IOS system.

### 4/5 — The App stopped working

*2021-06-13, version 3.0.3*

Starting a few month ago, the app stopped working. When loading the app, I see the first  picture, but it never fully loads. iPhone 11 Pro

## Frequently asked questions about BITZER REFRIGERANT RULER

### What does the BITZER REFRIGERANT RULER app do?

The app provides quick and easy access to refrigerant data. It allows users to determine key fluid properties, safety group information, global warming potential (GWP), ozone depletion potential (ODP), and recommended oil types for compressors. It also features an intuitive interface for temperature-to-pressure conversion.

### What are the main features of this app?

Key features include a comprehensive database of over 100 refrigerants with detailed information, a slider for easy temperature-to-pressure conversion, support for both metric (SI) and imperial (IP) units, search filters and favorites for quick refrigerant selection, and the ability to manually enter values or use atmospheric pressure correction.

### Is this app free to use?

Yes, the BITZER REFRIGERANT RULER app is available for free. It does not contain in-app purchases or advertisements, allowing for uninterrupted access to all its features and data.

### What kind of refrigerants are included in the app?

The app contains data and information on over 100 natural and synthetic refrigerants. This includes commonly used refrigerants as well as previously used ones that may have usage restrictions, making it useful for both current and older systems.

### How does the temperature-to-pressure conversion work?

The app features a slider that allows users to easily determine pressure, dew, and boiling temperatures for a selected refrigerant. Users can manually input pressure or temperature values, and the app can also correct pressure values based on atmospheric pressure, which can be entered manually or determined automatically via GPS or barometer if available.

## Version history (last 5 releases)

### 3.4.0 — 2023-01-24

• Additional explanations on the detail page of a refrigerant
• Atmospheric pressure can now be picked in kilopascals (kPa)
• Simplified search and navigation
• Updated refrigerant data
• New data set: R472A and R472B
• Performance- and stability improvements

### 3.3.0 — 2021-07-31

• Barometer function at default setting “gauge pressure”: Option to determine the current atmospheric pressure (by tapping “barometer symbol”) with autocorrection of dew and boiling temperatures
• Alternatively, manual entry of atmospheric pressure via text box or via ruler
• Updated refrigerant data
• New data set: R473A
• Performance- and stability improvements

### 3.0.3 — 2020-09-28

• Performance- and stability improvements

### 3.0.2 — 2019-12-14

This update includes UI enhancements and increases stability on older iPhones.

Do you have feedback and other suggestions? Please use the feedback feature in the app and take your time for a quick review on the AppStore. Thank you!

### 3.0.1 — 2019-11-25

This update increases stability on older iPhones and supports iOS 11 or higher.

Do you have feedback and other suggestions? Please use the feedback feature in the app and take your time for a quick review on the AppStore. Thank you!

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## More apps by BITZER SE

- [BITZER SPOT APP](https://appshunter.io/ios/app/bitzer-spot-app/id1434285448)
- [BITZER Electronics ServiceTool](https://appshunter.io/ios/app/bitzer-electronics-servicetool/id1437610638)

All apps by BITZER SE: https://appshunter.io/developer/1224090796

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*