# Catheter vs Ventilator Guide

The clearest difference is price: Ventilator Guide at Free against Catheter's $0.99. Ventilator Guide also leads on iOS requirement (11.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Ventilator Guide is free to download; Catheter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Catheter ships an update every 26 months, Ventilator Guide every 30 months. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Catheter | Ventilator Guide |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 26 months** | Every 30 months |
| Size | 21 MB | 116 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Michael Buckner](https://appshunter.io/developer/746425887) | [OSF Healthcare System](https://appshunter.io/developer/1053621635) |

## What reviewers say

### Catheter

[App page](https://appshunter.io/ios/app/catheter-patient-version/id796618275)

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

**In-app purchases:** none


### Ventilator Guide

[App page](https://appshunter.io/ios/app/ventilator-guide/id1522572803)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Catheter free?

Catheter costs $0.99, with no in-app purchases.

### Is Ventilator Guide free?

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

### Do Catheter or Ventilator Guide have ads?

Neither Catheter nor Ventilator Guide shows ads.

### Which is updated more often, Catheter or Ventilator Guide?

Catheter ships an update every 26 months, and Ventilator Guide every 30 months. Most recently, Catheter was updated on October 15, 2026 and Ventilator Guide on October 2, 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.*