# ABGs NOW! vs Rapid Vent Calculator

The clearest difference is price: Rapid Vent Calculator at Free against ABGs NOW!'s $0.99. Rapid Vent Calculator also leads on ratings volume (47 vs 2). ABGs NOW!'s advantage is update cadence (every 2 months vs every 4 months) and iOS requirement (10.0 vs 13.0). On rating, ads, in-app purchases and device support there is nothing between them.

Rapid Vent Calculator is free to download; ABGs NOW! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for ABGs NOW! against 5.0 for Rapid Vent Calculator. That said, the two scores are not equally well evidenced: Rapid Vent Calculator has 47 ratings behind it against 2, so its average is the more settled of the two.

ABGs NOW! ships an update every 2 months, Rapid Vent Calculator every 4 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | ABGs NOW! | Rapid Vent Calculator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/abgs-now/id1496483403/reviews) | [5.0 (47 ratings)](https://appshunter.io/ios/app/rapid-vent-calculator/id6451494244/reviews) |
| Number of ratings | 2 | **47** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | **Free** |
| Size | 161 MB | 48 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Bytewise Studios, LLC](https://appshunter.io/developer/1496483402) | [JENCO LLC](https://appshunter.io/developer/1698545004) |

## What reviewers say

### ABGs NOW!

[App page](https://appshunter.io/ios/app/abgs-now/id1496483403)

Master arterial blood gas interpretation with this interactive tool. It offers a calculator for quick answers, practice sessions with hints, and a challenge mode to test your skills. Detailed analysis is provided for any errors, making learning engaging.

**Highlights:** ABG Calculator, Practice Mode with Hints, Challenge Mode, Detailed Analysis, Knowledge Strengthening

**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 ABGs NOW! free?

ABGs NOW! costs $0.99, 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, ABGs NOW! or Rapid Vent Calculator?

ABGs NOW! and Rapid Vent Calculator are both rated 5.0 out of 5 on the App Store, from 2 and 47 ratings respectively.

### Do ABGs NOW! or Rapid Vent Calculator have ads?

Neither ABGs NOW! nor Rapid Vent Calculator shows ads.

### Which is updated more often, ABGs NOW! or Rapid Vent Calculator?

ABGs NOW! ships an update every 2 months, and Rapid Vent Calculator every 4 months. Most recently, ABGs NOW! was updated on November 3, 2026 and Rapid Vent Calculator on November 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.*