# Rapid Vent Calculator vs ShockRef

The clearest difference is update cadence: ShockRef at every 4 days against Rapid Vent Calculator's every 4 months. Rapid Vent Calculator's advantage is ratings volume (47 vs 3) and iOS requirement (13.0 vs 26.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Rapid Vent Calculator against 5.0 for ShockRef. That said, the two scores are not equally well evidenced: Rapid Vent Calculator has 47 ratings behind it against 3, so its average is the more settled of the two.

Rapid Vent Calculator ships an update every 4 months, ShockRef every 4 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Rapid Vent Calculator | ShockRef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (47 ratings)](https://appshunter.io/ios/app/rapid-vent-calculator/id6451494244/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/shockref/id6793122630/reviews) |
| Number of ratings | **47** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 48 MB | 15 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [JENCO LLC](https://appshunter.io/developer/1698545004) | [Rishi Kumar](https://appshunter.io/developer/1434016052) |

## What reviewers say

### 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


### ShockRef

[App page](https://appshunter.io/ios/app/shockref/id6793122630)

A clinical reference for managing shock and hemodynamics, offering insights into bedside physiology, resuscitation, and mechanical circulatory support. It includes practical calculators and drug references for critical care professionals and students.

**Highlights:** Shock phenotyping, Resuscitation workflows, Vasoactive drug references, Mechanical circulatory support troubleshooting, Physiology-based critical care, Practical calculators

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

**In-app purchases:** none


## Frequently asked questions

### Is Rapid Vent Calculator free?

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

### Is ShockRef free?

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

### Which has better reviews, Rapid Vent Calculator or ShockRef?

Rapid Vent Calculator and ShockRef are both rated 5.0 out of 5 on the App Store, from 47 and 3 ratings respectively.

### Do Rapid Vent Calculator or ShockRef have ads?

Neither Rapid Vent Calculator nor ShockRef shows ads.

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

Rapid Vent Calculator ships an update every 4 months, and ShockRef every 4 days. Most recently, Rapid Vent Calculator was updated on October 7, 2026 and ShockRef on October 10, 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.*