# CRT/RRT Flash Cards vs Respiratory Study Buddy

The clearest difference is price: Respiratory Study Buddy at Free against CRT/RRT Flash Cards's $57.00. Respiratory Study Buddy also leads on update cadence (every 4 days vs every 29 months). CRT/RRT Flash Cards's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 26.2). On ads and device support there is nothing between them.

Respiratory Study Buddy is free to download; CRT/RRT Flash Cards costs $57.00 up front. Respiratory Study Buddy sells 1 one-off in-app purchase. CRT/RRT Flash Cards asks for nothing beyond the download.

CRT/RRT Flash Cards ships an update every 29 months, Respiratory Study Buddy every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CRT/RRT Flash Cards | Respiratory Study Buddy |
| --- | --- | --- |
| Price | $57.00 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/respiratory-study-buddy/id6790609053/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 43 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [RTS Publishing Co Inc](https://appshunter.io/developer/604916069) | [Jesse DE LA ROSA](https://appshunter.io/developer/6787765326) |

## What reviewers say

### CRT/RRT Flash Cards

[App page](https://appshunter.io/ios/app/crtrrt-flash-cards/id1492505979)

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

**In-app purchases:** none


### Respiratory Study Buddy

[App page](https://appshunter.io/ios/app/respiratory-study-buddy/id6790609053)

This app helps respiratory therapy students prepare for board exams through interactive flashcards, quizzes, and simulators. It focuses on active learning with detailed explanations and practice scenarios to reinforce knowledge.

**Highlights:** 1,030 flashcards across 13 decks, Multiple choice and scenario-based quizzes, Full-length mock exams, Branching clinical simulation cases, Ventilator simulator with sandbox mode, Study calendar and spaced repetition, Question of the Day widget

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $9.99 | one-time |


## Frequently asked questions

### Is CRT/RRT Flash Cards free?

CRT/RRT Flash Cards costs $57.00, with no in-app purchases.

### Is Respiratory Study Buddy free?

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

### Do CRT/RRT Flash Cards or Respiratory Study Buddy have ads?

Neither CRT/RRT Flash Cards nor Respiratory Study Buddy shows ads.

### Which is updated more often, CRT/RRT Flash Cards or Respiratory Study Buddy?

CRT/RRT Flash Cards ships an update every 29 months, and Respiratory Study Buddy every 4 days. Most recently, CRT/RRT Flash Cards was updated on October 25, 2026 and Respiratory Study Buddy on October 24, 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.*