Comparison

ABG Acid vs Pocket ICU

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ABG Acid

This app guides clinicians through analyzing ABGs and electrolytes to identify acid-base disorders and diagnostic ideas for ill patients. It teaches a stepwise thinking process and provides differential diagnoses with explanations, aiding patient care and clinician learning.

Highlights
  • Stepwise ABG and electrolyte analysis
  • Identifies acid-base disorders
  • Provides diagnostic ideas
  • Teaches critical thinking process
  • Includes differential diagnoses mnemonics
  • Calculates predicted pCO2 and corrected bicarbonate
Features
Read full description

ABG Acid-Base eval walks a clinician through a stepwise approach to analyse ABG's and electrolytes in order to arrive at acid-base disorders and diagnostic ideas about ill patients. It is based mainly upon a worksheet developed by Dr. Erik Rupard from the medical literature. This tool not only yields answers, but just as importantly teaches the stepwise thinking process and the necessary concepts along the way. A clinician or learner will wind up with good information that assists patient care and should wind up a little smarter and more able to do it with less assistance the next time. It is a great support for those of us clinicians who use these tests only occasionally and don't have it memorized. The differential diagnoses include the classic mnemonics like MUDPILERS, CHAMPS, CLEVER PD, and HARDUPS, with explanations and examples. The app addresses such common questions as: * What are common causes of metabolic acidosis? respiratory alkalosis? * How do I calculate predicted pCO2? corrected bicarbonate? * What is the primary acid-base disorder? * Are additional acid-base disorders present, and if so, what are they? This app is written and intended for practicing clinicians like internists, family physicians, ER docs, cardiologists, pulmonologists, intensivists, and hospitalists; for resident physician trainees; for medical students; and of course for other clinician colleagues like NP's and PA's. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool. Notes of importance: - many thresholds and cutoffs are arbitrary and debatable, so you will have to use judgment to interpret which disorders are present and to what extent when suggested by the app - the app facilitates you to evaluate the data. If you make a mistake, the app will not argue with you. It will, at the end, offer to compare your work to the disorders that the app finds using the same algorithm - patients are more than the sums of their numbers and data, and they are often unique individuals. Use this information as a starting point in the evaluation of your patient and always do your own thinking!

About

Pocket ICU

This app offers concise critical care guidance written by attending physicians. It covers diagnosis, treatment, and management across various subspecialties, including detailed images and decision algorithms. Quickly find information, bookmark entries, and take notes for efficient ICU rounds and consultations.

Highlights
  • Concise guidance by attending physicians
  • Diagnosis, treatment, and management details
  • Subspecialty coverage
  • Detailed images and algorithms
  • Statistics and EBM overview
  • Pharmacological data and formulas
  • Full text search and bookmarking
Features
Read full description

New topics address bioweapons, disaster preparedness and critical care challenges of an air-transmissible, pandemic-causing pathogens like COVID-19. POCKET ICU FEATURES • Concise guidance written by attending physicians for everyone in critical care • Entries with diagnosis, treatment, and management details • Coverage of subspecialty areas including pediatric, neuro, cardiac, transplant, burn, and more • Detailed images, figures, and decision support algorithms • Overview of Statistics and Evidence-Based Medicine (EBM) • Helpful appendices provide pharmacological data, respiratory formulas, and cardiopulmonary relationships • Advanced Full Text Search helps find topics quickly • “Favorites” for bookmarking important entries • Highlighting and note-taking MORE ABOUT POCKET ICU With content from the highly regarded Pocket Notebook series, Pocket ICU provides users with an essential tool for quickly locating information from every subspecialty area of critical care. Entries have been written by attending physicians and are presented in brief but broad format so anyone in an ICU setting can quickly find answers and save time. This powerful resource can be downloaded to your smartphone and tablet and is great for preparing for rounds or consulting expert recommendations while on the ICU floor. Editors: Gyorgy Frendl, MD, PhD; Avery Tung, MD Publisher: Wolters Kluwer Powered by: Unbound Medicine

Screenshots

ABG Acid4 screens
Pocket ICU4 screens

Verdict

The call

The clearest difference is in-app purchases: ABG Acid at none against Pocket ICU's 3. ABG Acid also leads on iOS requirement (13.0 vs 15.0). Pocket ICU's advantage is ratings volume (317 vs 7) and device support (4 vs 2). On price, rating, review sentiment and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Pocket ICU sells 2 one-off in-app purchases. ABG Acid asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for ABG Acid against 4.6 for Pocket ICU. That said, the two scores are not equally well evidenced: Pocket ICU has 317 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 63% of ABG Acid's written reviews are positive against 64% of Pocket ICU's.

UpkeepUpdate frequency

ABG Acid ships an update every 5 months, Pocket ICU every 9 months. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
ABG Acid versus Pocket ICU: the parameters behind the verdict, then further details
ParameterABG AcidPocket ICU
PriceFreeFree
Rating4.6 (7 ratings)4.6 (317 ratings) — better
Positive reviews63.0% of reviews64.3% of reviews — better
Number of ratings7317 — better
Update frequencyEvery 5 months — betterEvery 9 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.0
Further details — not scored
Size1 MB9 MB
Age rating17+17+
DeveloperJoshua D. steinbergUnbound Medicine, Inc.

Customer experience

ABG Acid

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews46 reviews
Positive63.0%
Neutral2.2%
Negative34.8%

Pocket ICU

All ratings317 ratings
Positive90.2%
Neutral2.5%
Negative7.3%
Written reviews14 reviews
Positive64.3%
Neutral0.0%
Negative35.7%

Bugs and requests

ABG Acid

Not enough reviews yet to summarise bugs or requests.

Pocket ICU

Reported bugs

2 issues
  • No information loads after purchase
  • Issues with download/access

In-app purchases

None

ABG Acid

No in-app purchases

2 purchases

Pocket ICU

One-time2
  • Pocket ICU2 variants$69.99
  • Pocket ICU 2023$69.99

Questions

Is ABG Acid free?
ABG Acid is free to download, with no in-app purchases.
Is Pocket ICU free?
Pocket ICU is free to download, with in-app purchases available.
Which has better reviews, ABG Acid or Pocket ICU?
Pocket ICU is rated higher. ABG Acid averages 4.6 out of 5 from 7 ratings, while Pocket ICU averages 4.6 from 317 ratings.
Do ABG Acid or Pocket ICU have ads?
Neither ABG Acid nor Pocket ICU shows ads.
Which is updated more often, ABG Acid or Pocket ICU?
ABG Acid ships an update every 5 months, and Pocket ICU every 9 months. Most recently, ABG Acid was updated on October 23, 2026 and Pocket ICU on October 30, 2026.

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