# ABG Acid-Base eval — user reviews > 28 indexed App Store user reviews of ABG Acid by Joshua D. steinberg, rated 4.60/5 from 7 ratings. - Source: https://appshunter.io/ios/app/abg-acid-base-eval/id426019807/reviews - App overview in markdown: https://appshunter.io/ios/app/abg-acid-base-eval/id426019807.md - Rating breakdown: 5★ 6 · 4★ 0 · 3★ 0 · 2★ 1 · 1★ 0 ## Newest reviews (8 of 28) ### 4/5 — App A+ *2013-12-14* Great app for residents! Gives you the step by step. Highly recommend! ### 4/5 — 😃😃 *2012-04-15* This is a great app to finding basic underlying problems for ABG's! I enjoy it. I am a new Respiratory Therapy student (I won't be able to use my phone or this app on clinicals) but I like that I can check my theories. Nice work. I get my studies from Egan's so my anion gaps are different then the apps. ### 5/5 — Wonderful app *2011-12-13* Quick, user friendly and a very informative app! Strongly recommend it. ### 5/5 — Excellent & thorough! *2011-11-13* Great step-by-step evaluation of blood gases. Great for teaching residents on the fly! Thank you! ### 5/5 — Great calculator and an education tool *2011-11-08* Yes it might be easier just to input the numbers and get the answers. Yet this app asks to think and do your own calculations in a multistep analysis. You can skip those and get the answer. It even gives you deferential diagnosis for the problems you face. I found that most people who give ABG apps low ratings tend not to understand the complexity of some ABG problems. This app starts by determining the primary problem. Then determines the preexisting respiratory and then metabolic conditions. Excellent and it is how you should do the math in your brain. ### 5/5 — Alan *2011-08-01* One of the best ABG evaluation apps! Goes through the step by step process in teaching how to eval ABG. Great for students/residents ### 5/5 — Love this app... *2011-04-27* And I never write reviews, but as an internist, I think this app is soundly designed and helpful to learn the method of ABG analysis. Wonderful use of the Haber et al paper. ### 5/5 — A great way to work through these problems *2011-04-26* This is a neat little app that does more than just "spit out" numbers, but actually walks the user through the process of figuring out acid/base disorders. Armed with and ABG and electrolyte panel, any clinician can figure out the disorders their patient has and generate a good differential as to the cause(s). Simple to use, straightforward, and uses a proven approach (both the Haber method and Winter's formula). Well done! ## Most critical reviews (10 lowest-rated) ### 1/5 — Could be useful at work *2015-03-24* I can't really say if the app could be great because it freezes everytime I try to open it😠😞 ### 1/5 — A waste if you have ios8 *2014-11-08, version 1.3* Does not work at all. ### 1/5 — Great idea *2014-10-30, version 1.3* But doesn't work, needs to be updated for ios8 ### 1/5 — Useless *2014-10-29, version 1.3* Completely unresponsive in ios8. ### 1/5 — saw work well...once *2014-10-16* My senior resident showed me this app and it worked great for him. naturally, I download it soon after. has yet to work once for me. The home screen comes on and I'm not able to hit buttons or change values. Hopefully this just needs to be updated for iOS8. ### 1/5 — Doesn't work with iOS 8! *2014-09-28, version 1.3* This app doesn't work at all with iOS 8. Don't waste your time downloading it. ### 1/5 — AWFUL *2012-07-20, version 1.3* This precludes the reality that you may have limited info ie pH PO2 PCO2. Would not have even give a star RNDAY ### 2/5 — Good app if you can get it to open! *2014-11-23* Used this app before ios8 update and loved it but since I updated my iPhone I can not get to open! :( Please update!! ### 3/5 — iOS8 Incompatible *2014-10-05* Please update to be compatible with iOS 8 as I can’t use it on my iPhone 6. ### 4/5 — Best of all *2014-09-21, version 1.3* Been using it on a daily basis. Really helps :) ## Most praised reviews (10 highest-rated) ### 5/5 — Great app *2025-06-03* Works really well ### 5/5 — Well done *2015-09-05* I'd prefer to input the numbers instead of turning a wheel, but overall it's a very useful app. ### 5/5 — Great app *2015-07-23* This is one of the good app that I found useful while I am in doubt. Accurate. ### 5/5 — My most used ABG app *2013-10-17* This app walks you through ABG interpretation and provides differential diagnosis. It can handle simple as well as more complex situations. ### 5/5 — Excellent App! *2012-09-19* Great work, Josh! This app does a very good job explaining each step of the analysis. Great for people like me that are only getting intermittent exposure to this and need a refresher. Keep up the good work! ### 5/5 — Excellent app *2012-08-22* As a practicing RN working towards my Nurse Practitioner certification I find this app extremely useful. Working outside of a hospital over the last few years I found I was a little rusty on my ABG skills. This app is an excellent tool to supplement critical thinking skills. ### 5/5 — Great! *2012-07-22* I love the step-to-step guidance to reach the results. Very intuitive app. ### 5/5 — Simple, Effective, Awesome! *2012-07-09* There are so many different methods to interpret ABGs it can seem overwhelming when you are first learning. This app teaches a very simple yet effective method for working through the analysis. It will allow you to diagnose even the most complicated triple acid base disorders quickly. The best part is that it explains each step along the way so you can really learn to do the analysis on your own without help from the app. Very well done, highly recommend! ### 5/5 — Excellent *2012-04-21* Must try ### 5/5 — Awesome app! *2012-02-24* Great step by step way to learn. Thanks! --- *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 2026-06-02.*