# MSDS vs CES Trainer

The clearest difference is price: CES Trainer at Free against MSDS's $0.99. CES Trainer also leads on update cadence (daily vs every 41 months). MSDS's advantage is in-app purchases (none vs 1) and chart position (#177 vs unranked). On ads there is nothing between them.

CES Trainer is free to download; MSDS costs $0.99 up front. CES Trainer sells 1 one-off in-app purchase. MSDS asks for nothing beyond the download.

MSDS ships an update every 41 months, CES Trainer daily. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | MSDS | CES Trainer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 5.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Daily** |
| Monetization | Paid | — |
| Best chart rank | **#177** | — |
| Size | 25 MB | 59 MB |
| Requires iOS | **11.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Maerix inc.](https://appshunter.io/developer/315798706) | [Yevgenii Kryzhanivskyi](https://appshunter.io/developer/1778319692) |

## What reviewers say

### MSDS

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

**Currently charting:** #177 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


### CES Trainer

[App page](https://appshunter.io/ios/app/ces-trainer/id6737857414)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a beer | $4.99 | one-time |


## Frequently asked questions

### Is MSDS free?

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

### Is CES Trainer free?

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

### Do MSDS or CES Trainer have ads?

Neither MSDS nor CES Trainer shows ads.

### Which is updated more often, MSDS or CES Trainer?

MSDS ships an update every 41 months, and CES Trainer daily. Most recently, MSDS was updated on September 23, 2026 and CES Trainer on September 10, 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.*