# RTB2 vs Respiratory Tactician

The clearest difference is monetization model: Respiratory Tactician at free against RTB2's freemium. Respiratory Tactician also leads on ratings volume (9 vs 2). RTB2's advantage is update cadence (every 5 days vs every 2 weeks) and iOS requirement (15.1 vs 17.0). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. RTB2 sells 1 in-app purchase, starting at $2.99 per month and Respiratory Tactician sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for RTB2 against 5.0 for Respiratory Tactician. Both are backed by a comparable volume of ratings — 2 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

RTB2 ships an update every 5 days, Respiratory Tactician every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | RTB2 | Respiratory Tactician |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/rtb2-respiratory-reference/id6757658847/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/respiratory-tactician/id6762234266/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | Freemium | **Free** |
| Size | 46 MB | 26 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Bbytetechworks LLC](https://appshunter.io/developer/1844731958) | [JESUS CALATA VARGAS](https://appshunter.io/developer/1893482375) |

## What reviewers say

### 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 |


### Respiratory Tactician

[App page](https://appshunter.io/ios/app/respiratory-tactician/id6762234266)

A rapid, offline reference tool for respiratory therapists and critical care clinicians. It offers numerous calculators, a guide to ventilator modes, and an AI-powered blood gas interpreter to aid in patient assessment and management.

**Highlights:** Extensive medical calculators, Ventilator modes reference, AI-powered ABG interpreter, Offline functionality, Favorites and history tracking, Unit conversion

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Operator Monthly | $4.99 | per month |
| Operator Yearly | $39.99 | per year |


## Frequently asked questions

### Is RTB2 free?

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

### Is Respiratory Tactician free?

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

### Which has better reviews, RTB2 or Respiratory Tactician?

RTB2 and Respiratory Tactician are both rated 5.0 out of 5 on the App Store, from 2 and 9 ratings respectively.

### Do RTB2 or Respiratory Tactician have ads?

Neither RTB2 nor Respiratory Tactician shows ads.

### Which is updated more often, RTB2 or Respiratory Tactician?

RTB2 ships an update every 5 days, and Respiratory Tactician every 2 weeks. Most recently, RTB2 was updated on October 31, 2026 and Respiratory Tactician on October 31, 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.*