# NCLEX Respiratory System tests vs Prep

The clearest difference is price: Prep at Free against NCLEX Respiratory System tests's $2.99. Prep also leads on update cadence (every 2 weeks vs every 13 months). NCLEX Respiratory System tests's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Prep is free to download; NCLEX Respiratory System tests costs $2.99 up front. Prep sells 3 in-app purchases, starting at $39.99 per month. NCLEX Respiratory System tests asks for nothing beyond the download.

NCLEX Respiratory System tests ships an update every 13 months, Prep every 2 weeks. The most recent releases landed on September 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | NCLEX Respiratory System tests | Prep |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Size | 15 MB | 48 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Andrey Andreyev](https://appshunter.io/developer/1418253369) | [15990823 Canada Inc](https://appshunter.io/developer/1783465379) |

## What reviewers say

### NCLEX Respiratory System tests

[App page](https://appshunter.io/ios/app/nclex-respiratory-system-tests/id6446292452)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prep

[App page](https://appshunter.io/ios/app/prep-rn/id6739027831)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prep-rn Monthly Plan. | $39.99 | per month |
| Prep-rn Quarterly Plan | $129.99 | per 3 months |
| Prep-rn Half Yearly Plan | $199.99 | per 6 months |


## Frequently asked questions

### Is NCLEX Respiratory System tests free?

NCLEX Respiratory System tests costs $2.99, with no in-app purchases.

### Is Prep free?

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

### Do NCLEX Respiratory System tests or Prep have ads?

Neither NCLEX Respiratory System tests nor Prep shows ads.

### Which is updated more often, NCLEX Respiratory System tests or Prep?

NCLEX Respiratory System tests ships an update every 13 months, and Prep every 2 weeks. Most recently, NCLEX Respiratory System tests was updated on September 11, 2026 and Prep on September 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.*