# MSDS vs NCLEX RN Prep & Test

The clearest difference is price: NCLEX RN Prep & Test at Free against MSDS's $0.99. NCLEX RN Prep & Test also leads on update cadence (every 3 months vs every 41 months). MSDS's advantage is in-app purchases (none vs 3) and chart position (#167 vs unranked). On ads, device support and iOS requirement there is nothing between them.

NCLEX RN Prep & Test is free to download; MSDS costs $0.99 up front. NCLEX RN Prep & Test sells 3 in-app purchases, starting at $4.99 per month. MSDS asks for nothing beyond the download.

MSDS ships an update every 41 months, NCLEX RN Prep & Test every 3 months. The most recent releases landed on September 23, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | MSDS | NCLEX RN Prep & Test |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 5.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 3 months** |
| Monetization | Paid | — |
| Best chart rank | **#167** | — |
| Size | 25 MB | 21 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Maerix inc.](https://appshunter.io/developer/315798706) | [学勇 张](https://appshunter.io/developer/590340880) |

## What reviewers say

### MSDS

[App page](https://appshunter.io/ios/app/msds/id315798703)

**Currently charting:** #167 Top Paid · Education (US App Store)

This app helps users understand the content of Material Safety Data Sheets (MSDS) and hazardous symbols on chemical containers. It serves as a reference for various safety standards, including NFPA 704, WHMIS, European regulations, and GHS.

**Highlights:** Understand MSDS content, Interpret hazardous symbols, Reference NFPA 704, Reference WHMIS, Reference European safety standards, Reference GHS

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

**In-app purchases:** none


### NCLEX RN Prep & Test

[App page](https://appshunter.io/ios/app/nclex-rn-prep-and-test/id6502045069)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONTHLY | $4.99 | per month |
| 3 MONTHS | $9.99 | per 3 months |
| YEARLY | $19.99 | per year |


## Frequently asked questions

### Is MSDS free?

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

### Is NCLEX RN Prep & Test free?

NCLEX RN Prep & Test is free to download, with in-app purchases available.

### Do MSDS or NCLEX RN Prep & Test have ads?

Neither MSDS nor NCLEX RN Prep & Test shows ads.

### Which is updated more often, MSDS or NCLEX RN Prep & Test?

MSDS ships an update every 41 months, and NCLEX RN Prep & Test every 3 months. Most recently, MSDS was updated on September 23, 2026 and NCLEX RN Prep & Test on September 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*