# Critical ABG vs Mechanical Ventilation Expert

The clearest difference is price: Mechanical Ventilation Expert at Free against Critical ABG's $3.99. Mechanical Ventilation Expert also leads on update cadence (every 2 weeks vs every 42 months) and iOS requirement (13.0 vs 15.2). Critical ABG's advantage is rating (4.0 vs 1.8) and review sentiment (50% vs 33%). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Mechanical Ventilation Expert is free to download; Critical ABG costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Critical ABG holds the better App Store score, 4.0 against 1.8. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 50% of Critical ABG's written reviews are positive against 33% of Mechanical Ventilation Expert's.

Critical ABG ships an update every 42 months, Mechanical Ventilation Expert every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Critical ABG | Mechanical Ventilation Expert |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/critical-abg/id1438674467/reviews)** | [1.8 (8 ratings)](https://appshunter.io/ios/app/mechanical-ventilation-expert/id1591944892/reviews) |
| Number of ratings | 4 | **8** |
| Positive reviews | **50.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 1 MB |
| Requires iOS | 15.2 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [The Barringer Group, LLC](https://appshunter.io/developer/504065735) | [Valeriy Streltsov](https://appshunter.io/developer/1324697386) |

## What reviewers say

### Critical ABG

[App page](https://appshunter.io/ios/app/critical-abg/id1438674467)

This medical app provides a comprehensive analysis of acid-base disorders with a step-by-step approach to understanding them. It includes common causes, differential treatment options, and built-in compensation mechanisms. An optimization calculator for ventilator settings is also available.

**Highlights:** Acid-base disorder analysis, Step-by-step understanding, Common causes and treatments, Compensation mechanisms, Ventilation optimization calculator, Differential diagnosis

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Mechanical Ventilation Expert

[App page](https://appshunter.io/ios/app/mechanical-ventilation-expert/id1591944892)

This medical app assists intensive care physicians in managing patients with acute respiratory failure. It provides advice on mechanical ventilation parameters and helps determine optimal respiratory support methods based on research findings.

**Highlights:** Mechanical ventilation parameter correction, Respiratory support method selection, Non-invasive oxygenation index estimation, Guidance on invasive and non-invasive ventilation, Educational tool for physicians, Based on multicenter research

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Critical ABG free?

Critical ABG costs $3.99, with no in-app purchases.

### Is Mechanical Ventilation Expert free?

Mechanical Ventilation Expert is free to download, with no in-app purchases.

### Which has better reviews, Critical ABG or Mechanical Ventilation Expert?

Critical ABG is rated higher. Critical ABG averages 4.0 out of 5 from 4 ratings, while Mechanical Ventilation Expert averages 1.8 from 8 ratings.

### Do Critical ABG or Mechanical Ventilation Expert have ads?

Neither Critical ABG nor Mechanical Ventilation Expert shows ads.

### Which is updated more often, Critical ABG or Mechanical Ventilation Expert?

Critical ABG ships an update every 42 months, and Mechanical Ventilation Expert every 2 weeks. Most recently, Critical ABG was updated on October 24, 2026 and Mechanical Ventilation Expert on October 24, 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.*