# Chemdata vs HazMat

The clearest difference is review sentiment: Chemdata at 67% against HazMat's 20%. Chemdata also leads on in-app purchases (none vs 3) and iOS requirement (14.0 vs 18.6). HazMat's advantage is update cadence (every 2 months vs every 19 months). On price, ads and device support there is nothing between them.

Both are free to download. HazMat sells 3 in-app purchases, starting at $4.99 per 7 days. Chemdata asks for nothing beyond the download.

Chemdata ships an update every 19 months, HazMat every 2 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Chemdata | HazMat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (1K ratings)](https://appshunter.io/ios/app/hazmat-erg-2024-guidebook/id1486387187/reviews)** |
| Number of ratings | — | **1K** |
| Positive reviews | **66.7% of reviews** | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 4 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Ricardo-AEA ltd](https://appshunter.io/developer/691094634) | [Volodymyr Oliennikov](https://appshunter.io/developer/926116230) |

## What reviewers say

### Chemdata

[App page](https://appshunter.io/ios/app/chemdata/id849758854)

Access a comprehensive chemical hazard database offline for incident management. Provides detailed information on over 62,000 chemicals, including safety, transport, and emergency response guidance. Offers multilingual support and regular updates.

**Highlights:** Offline chemical database access, Hazardous chemical identification, Incident command support, Transport classification, Personal Protective Equipment (PPE) guidance, Multilingual support (EN, NL, FR, DE, ES)

**Features:** macOS Compatibility

**In-app purchases:** none


### HazMat

[App page](https://appshunter.io/ios/app/hazmat-erg-2024-guidebook/id1486387187)

This app provides a quick reference for hazardous materials, serving as an educational tool for handling, storage, and incident response. It functions offline, making it accessible without an internet connection.

**Highlights:** Hazardous materials reference, ERG 2024 guide, Incident response tool, Handling and storage information, Offline functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly | $4.99 | per 7 days |
| Premium - Yearly | $14.99 | per year |
| Premium Access - Lifetime | $29.99 | one-time |

**What reviewers like**

- 🚀 Handy for hazmat training
- 👍 Very informative

**What reviewers complain about**

- 🐛 App is outdated
- 💰 Requires paid upgrade to access full content
- 🔍 Difficult to navigate and use

**Reported bugs**

- Table 1 link does not work as expected
- Search function does not find important content

**Requested features**

- Update app with latest 2024 version
- Improve navigation and accessibility


## Frequently asked questions

### Is Chemdata free?

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

### Is HazMat free?

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

### Do Chemdata or HazMat have ads?

Neither Chemdata nor HazMat shows ads.

### Which is updated more often, Chemdata or HazMat?

Chemdata ships an update every 19 months, and HazMat every 2 months. Most recently, Chemdata was updated on November 1, 2026 and HazMat on November 11, 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.*