ABG Acid vs CV Risk Estimation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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!
CV Risk Estimation
This app provides clinicians with three essential 10-year cardiovascular event risk calculators for primary prevention. It helps estimate risk based on patient data and assess the potential impact of lifestyle changes.
- Framingham 2008 risk calculator
- ASCVD 2013 risk calculator
- ASCVD 2018 risk calculator
- Cardiovascular disease primary prevention tool
- Risk impact assessment for lifestyle changes
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This app is for CLINICIANS, not the lay public. The CV Risk app presents clinicians with three valuable 10-year cardiovascular event risk calculators to serve clinicians and learners in primary prevention of cardiovascular disease. It is for clinicians only, not the lay public. The calculators are Framingham 2008, ASCVD 2013, and the revised pooled cohort equations ASCVD of 2018. The app addresses such common questions as: • What is the ASCVD 10-year CV risk for a 57 year old male hypertensive smoker with a given set of lipid and blood pressure numbers? • What’s the magnitude of impact of a patient on their own improving their cholesterol by 11, 27, or 41 points? • For a poorly controlled hypertensive smoker with a 10-year risk of 31.3%, how impactful would improved blood pressure control or smoking cessation be? • How impactful is a cholesterol of 220 on a given patient's risk at 35 vs. 55 vs. 75 years old? • I hear that ASCVD 2013 overestimates risk, particularly for black adults? True? What about the revised pooled cohort equations of 2018? The app explicitly does not include treatment thresholds, LDL targets, estimates of impact of therapy, coronary calcium scoring, etc. I wanted the cleanest simplest tool possible for evaluating and discussing cardiovascular risk with all the other more subjective, controversial stuff out of the way. This app is written and intended for practicing clinicians like internists and family physicians; for resident physician trainees; for medical students; and of course for other clinician colleagues like NP's and PA's. Cardiologists could use this app, but you folks are focused on secondary prevention, which is an entirely different ballgame. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool.
Screenshots
Verdict
The clearest difference is monetization model: CV Risk Estimation at free against ABG Acid's paid. CV Risk Estimation also leads on review sentiment (100% vs 63%) and update cadence (monthly vs every 5 months). ABG Acid's advantage is iOS requirement (13.0 vs 15.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CV Risk Estimation holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews point the same way: 63% of ABG Acid's written reviews are positive against 100% of CV Risk Estimation's.
ABG Acid ships an update every 5 months, CV Risk Estimation monthly. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.
| Parameter | ABG Acid | CV Risk Estimation |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (7 ratings) | 4.8 (4 ratings) — better |
| Positive reviews | 63.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 4 |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 17+ | 17+ |
| Developer | Joshua D. steinberg | United Health Services, Inc. |
Customer experience
ABG Acid
CV Risk Estimation
In-app purchases
ABG Acid
No in-app purchases
CV Risk Estimation
No in-app purchases
Questions
Is ABG Acid free?
Is CV Risk Estimation free?
Which has better reviews, ABG Acid or CV Risk Estimation?
Do ABG Acid or CV Risk Estimation have ads?
Which is updated more often, ABG Acid or CV Risk Estimation?
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