# ABG Acid vs Rapid Vent Calculator

The clearest difference is monetization model: Rapid Vent Calculator at free against ABG Acid's paid. Rapid Vent Calculator also leads on review sentiment (100% vs 63%) and rating (5.0 vs 4.6). On price, update cadence, 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.

Rapid Vent Calculator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Rapid Vent Calculator has 47 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 63% of ABG Acid's written reviews are positive against 100% of Rapid Vent Calculator's.

ABG Acid ships an update every 5 months, Rapid Vent Calculator every 4 months. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ABG Acid | Rapid Vent Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/abg-acid-base-eval/id426019807/reviews) | **[5.0 (47 ratings)](https://appshunter.io/ios/app/rapid-vent-calculator/id6451494244/reviews)** |
| Number of ratings | 7 | **47** |
| Positive reviews | 63.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 48 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Joshua D. steinberg](https://appshunter.io/developer/374154837) | [JENCO LLC](https://appshunter.io/developer/1698545004) |

## 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


### Rapid Vent Calculator

[App page](https://appshunter.io/ios/app/rapid-vent-calculator/id6451494244)

This medical app assists healthcare professionals in calculating essential ventilator settings and medication dosages for critical care. It provides rapid, accurate results for paramedics, respiratory therapists, nurses, and doctors, streamlining patient management.

**Highlights:** Effortless ventilator settings calculation, Rapid results for quick decision-making, RSI medication dosage assistant, User-friendly interface for medical professionals, Accurate patient parameter input

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

**In-app purchases:** none


## Frequently asked questions

### Is ABG Acid free?

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

### Is Rapid Vent Calculator free?

Rapid Vent Calculator is free to download, with no in-app purchases.

### Which has better reviews, ABG Acid or Rapid Vent Calculator?

Rapid Vent Calculator is rated higher. ABG Acid averages 4.6 out of 5 from 7 ratings, while Rapid Vent Calculator averages 5.0 from 47 ratings.

### Do ABG Acid or Rapid Vent Calculator have ads?

Neither ABG Acid nor Rapid Vent Calculator shows ads.

### Which is updated more often, ABG Acid or Rapid Vent Calculator?

ABG Acid ships an update every 5 months, and Rapid Vent Calculator every 4 months. Most recently, ABG Acid was updated on October 23, 2026 and Rapid Vent Calculator on October 30, 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.*