# ABG Acid vs CV Risk Estimation

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.

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.

## The numbers

| Metric | ABG Acid | CV Risk Estimation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/abg-acid-base-eval/id426019807/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/cv-risk-estimation/id1630193162/reviews)** |
| Number of ratings | **7** | 4 |
| Positive reviews | 63.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 2 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Joshua D. steinberg](https://appshunter.io/developer/374154837) | [United Health Services, Inc.](https://appshunter.io/developer/1451318916) |

## What reviewers say

### ABG Acid

[App page](https://appshunter.io/ios/app/abg-acid-base-eval/id426019807)

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:** macOS Compatibility

**In-app purchases:** none


### CV Risk Estimation

[App page](https://appshunter.io/ios/app/cv-risk-estimation/id1630193162)

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.

**Highlights:** Framingham 2008 risk calculator, ASCVD 2013 risk calculator, ASCVD 2018 risk calculator, Cardiovascular disease primary prevention tool, Risk impact assessment for lifestyle changes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ABG Acid free?

ABG Acid is free to download, with no in-app purchases.

### Is CV Risk Estimation free?

CV Risk Estimation is free to download, with no in-app purchases.

### Which has better reviews, ABG Acid or CV Risk Estimation?

CV Risk Estimation is rated higher. ABG Acid averages 4.6 out of 5 from 7 ratings, while CV Risk Estimation averages 4.8 from 4 ratings.

### Do ABG Acid or CV Risk Estimation have ads?

Neither ABG Acid nor CV Risk Estimation shows ads.

### Which is updated more often, ABG Acid or CV Risk Estimation?

ABG Acid ships an update every 5 months, and CV Risk Estimation monthly. Most recently, ABG Acid was updated on October 16, 2026 and CV Risk Estimation on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*