# BITZER REFRIGERANT RULER — user reviews > 120 indexed App Store user reviews of BITZER REFRIGERANT RULER by BITZER SE, rated 4.60/5 from 1,112 ratings. - Source: https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792/reviews - App overview in markdown: https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792.md - Rating breakdown: 5★ 904 · 4★ 116 · 3★ 41 · 2★ 11 · 1★ 40 ## 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 ## Newest reviews (10 of 120) ### 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~ ### 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 ### 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 ### 2/5 — Not as good *2021-06-10, version 3.0.3* Please bring back the old format ### 4/5 — Complète *2020-07-18, version 3.0.2* Très pratique. Réglementation FGaz en Anglais. ### 4/5 — Trés utiles.. *2019-12-14, version 3.0.2* Très bonne appli 👍👍👍mais manque traduction en français ### 2/5 — Note: charts in PSIA *2017-04-20, version 2.0.2* The PT charts are in PSIA. You will have to add atmospheric pressure in order to be useful. These charts are not PSIG. I didn't see any way to switch them. ### 3/5 — Needs an option *2017-03-08, version 2.0.2* Please provide an option to turn off dew and bubble. Too technical for most folks. ## Most critical reviews (10 lowest-rated) ### 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 ### 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 ? ### 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. ### 1/5 — Läuft nach IOS Update nicht mehr *2020-12-30, version 3.0.3* Läuft nach IOS Update nicht mehr ### 1/5 — Horrible after update *2020-03-18, version 3.0.2* This used to be a good app then the update and completely changed the format not as easy to run or figure out. ### 1/5 — Slow down. *2020-02-15, version 3.0.2* Tired of every month these apps change, I understand and like what I have, then they change everything, let it be an option, I’m deleting this app cause it keeps changing Sorry I’m old and don’t need to re learn all my apps every month ### 1/5 — Hate it *2020-02-07, version 3.0.2* There was nothing wrong with the old number chart! ### 1/5 — Kelly gray *2019-11-23, version 3.0* Been using app for years now they change it to a ruler p/t charts please will be downloading new app some of us are still old school Hvac techs who now how to use them ### 1/5 — Ruined *2017-08-18, version 2.0.2* Use to be a great app and then got completely redesigned and now is all but useless. ## Most praised reviews (10 highest-rated) ### 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. ### 5/5 — Kn *2021-06-09, version 3.0.3* Z j mmkk k h mmkk nmll no wmlmmmlmmccc is mm I’m k ### 5/5 — Service technician *2021-05-17, version 3.0.3* 👍 ### 5/5 — War ne echt hilfreiche App *2021-04-11, version 3.0.3* bis zu einem iOS Update. Seitdem startet dies App nicht mehr. Schade! ### 5/5 — CEO *2020-09-22, version 3.0.2* Awesome ### 5/5 — Great app!! *2020-07-10, version 3.0.2* Used this to teach my class PT charts. ### 5/5 — Fantastic!!! *2020-04-23, version 3.0.2* Great app. Most comprehensive and useful refrigerant PT app available. ### 5/5 — Last update *2020-02-24, version 3.0.2* It was better before the last update ### 5/5 — Muy buena y mejorada *2019-12-14, version 3.0.2* Buenas mejoras más fácil de usar y más práctica. Los colores de la regla se podrían combinar de otra manera para que fuera más fácil visualizarlos o quizá poner en negrita los textos para que se lean mejor si no tienes buena vista. Imprescindible para un profesional de la refrigeración o la climatización. No debe faltar a nadie que trabaje en el gremio. Muy bien hecha y fácil de manejar. Repito: ¡¡¡¡¡ IMPRESCINDIBLE!!!! Enhorabuena a los programadores y a BITZER. ### 5/5 — کولر *2018-04-23, version 2.0.2* یه برنامه خوب واسه تعمیر کاران کولر اسپلیت --- *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 2026-09-06.*