# Cardinal Glennon ER Reference vs Rapid Vent Calculator

The clearest difference is rating: Rapid Vent Calculator at 5.0 against Cardinal Glennon ER Reference's 4.5. Rapid Vent Calculator also leads on ratings volume (47 vs 4) and iOS requirement (13.0 vs 15.0). On price, review sentiment, update cadence and ads 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 4.5. That said, the two scores are not equally well evidenced: Rapid Vent Calculator has 47 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Cardinal Glennon ER Reference ships an update every 5 months, Rapid Vent Calculator every 4 months. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Cardinal Glennon ER Reference | Rapid Vent Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/cardinal-glennon-er-reference/id516229794/reviews) | **[5.0 (47 ratings)](https://appshunter.io/ios/app/rapid-vent-calculator/id6451494244/reviews)** |
| Number of ratings | 4 | **47** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 28 MB | 48 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Acid Remap LLC](https://appshunter.io/developer/323130617) | [JENCO LLC](https://appshunter.io/developer/1698545004) |

## What reviewers say

### Cardinal Glennon ER Reference

[App page](https://appshunter.io/ios/app/cardinal-glennon-er-reference/id516229794)

Provides offline access to a pediatric ER and EMS reference book. Quickly look up protocols, search titles and text, and save favorites. Customizable notes and contact information are also included.

**Highlights:** Offline protocol lookup, Indexed search, Favorites tab, Customizable notes, Up-to-date protocols, Hospital contact info

**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 Cardinal Glennon ER Reference free?

Cardinal Glennon ER Reference 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, Cardinal Glennon ER Reference or Rapid Vent Calculator?

Rapid Vent Calculator is rated higher. Cardinal Glennon ER Reference averages 4.5 out of 5 from 4 ratings, while Rapid Vent Calculator averages 5.0 from 47 ratings.

### Do Cardinal Glennon ER Reference or Rapid Vent Calculator have ads?

Neither Cardinal Glennon ER Reference nor Rapid Vent Calculator shows ads.

### Which is updated more often, Cardinal Glennon ER Reference or Rapid Vent Calculator?

Cardinal Glennon ER Reference ships an update every 5 months, and Rapid Vent Calculator every 4 months. Most recently, Cardinal Glennon ER Reference was updated on October 24, 2026 and Rapid Vent Calculator on October 7, 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.*