# Mechanical Ventilation Expert vs RTB2

The clearest difference is review sentiment: RTB2 at 100% against Mechanical Ventilation Expert's 33%. RTB2 also leads on rating (5.0 vs 1.9) and update cadence (every 5 days vs every 2 weeks). Mechanical Ventilation Expert's advantage is in-app purchases (none vs 1) and ratings volume (7 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. RTB2 sells 1 in-app purchase, starting at $2.99 per month. Mechanical Ventilation Expert asks for nothing beyond the download.

RTB2 holds the better App Store score, 5.0 against 1.9. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 33% of Mechanical Ventilation Expert's written reviews are positive against 100% of RTB2's.

Mechanical Ventilation Expert ships an update every 2 weeks, RTB2 every 5 days. The most recent releases landed on October 3, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Mechanical Ventilation Expert | RTB2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (7 ratings)](https://appshunter.io/ios/app/mechanical-ventilation-expert/id1591944892/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rtb2-respiratory-reference/id6757658847/reviews)** |
| Number of ratings | **7** | 2 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 46 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Valeriy Streltsov](https://appshunter.io/developer/1324697386) | [Bbytetechworks LLC](https://appshunter.io/developer/1844731958) |

## What reviewers say

### Mechanical Ventilation Expert

[App page](https://appshunter.io/ios/app/mechanical-ventilation-expert/id1591944892)

This medical app assists intensive care physicians in managing patients with acute respiratory failure. It provides advice on mechanical ventilation parameters and helps determine optimal respiratory support methods based on research findings.

**Highlights:** Mechanical ventilation parameter correction, Respiratory support method selection, Non-invasive oxygenation index estimation, Guidance on invasive and non-invasive ventilation, Educational tool for physicians, Based on multicenter research

**Features:** macOS Compatibility

**In-app purchases:** none


### RTB2

[App page](https://appshunter.io/ios/app/rtb2-respiratory-reference/id6757658847)

This medical reference app provides respiratory therapists and students with essential clinical tools. It features ventilator mode guides, therapy calculators, and oxygen guidance in a clean, organized format for quick access in critical care settings.

**Highlights:** Ventilator mode reference guides, Respiratory therapy clinical calculators, Oxygen device guidance, Structured respiratory care information, Fast clinical review format, Advanced calculators (Pro)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RTB2 Pro | $2.99 | per month |


## Frequently asked questions

### Is Mechanical Ventilation Expert free?

Mechanical Ventilation Expert is free to download, with no in-app purchases.

### Is RTB2 free?

RTB2 is free to download, with in-app purchases available.

### Which has better reviews, Mechanical Ventilation Expert or RTB2?

RTB2 is rated higher. Mechanical Ventilation Expert averages 1.9 out of 5 from 7 ratings, while RTB2 averages 5.0 from 2 ratings.

### Do Mechanical Ventilation Expert or RTB2 have ads?

Neither Mechanical Ventilation Expert nor RTB2 shows ads.

### Which is updated more often, Mechanical Ventilation Expert or RTB2?

Mechanical Ventilation Expert ships an update every 2 weeks, and RTB2 every 5 days. Most recently, Mechanical Ventilation Expert was updated on October 3, 2026 and RTB2 on September 26, 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.*