# MSDS vs Orizon Aviation

The clearest difference is price: Orizon Aviation at Free against MSDS's $0.99. Orizon Aviation also leads on update cadence (monthly vs every 41 months). MSDS's advantage is iOS requirement (11.0 vs 15.5). On ads, in-app purchases and device support there is nothing between them.

Orizon Aviation is free to download; MSDS costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MSDS ships an update every 41 months, Orizon Aviation monthly. The most recent releases landed on October 23, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | MSDS | Orizon Aviation |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 5.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Monthly** |
| Monetization | Paid | — |
| Size | 25 MB | 71 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maerix inc.](https://appshunter.io/developer/315798706) | [Orizon Aviation Quebec inc.](https://appshunter.io/developer/1445791581) |

## What reviewers say

### MSDS

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

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


### Orizon Aviation

[App page](https://appshunter.io/ios/app/orizon-aviation/id1445791582)

**In-app purchases:** none


## Frequently asked questions

### Is MSDS free?

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

### Is Orizon Aviation free?

Orizon Aviation is free to download, with no in-app purchases.

### Do MSDS or Orizon Aviation have ads?

Neither MSDS nor Orizon Aviation shows ads.

### Which is updated more often, MSDS or Orizon Aviation?

MSDS ships an update every 41 months, and Orizon Aviation monthly. Most recently, MSDS was updated on October 23, 2026 and Orizon Aviation on October 13, 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.*