# HazMat Reference vs HazMat

HazMat Reference and HazMat both sit at 4.8 stars, but that hides the real split: 96% of HazMat Reference's written reviews are positive against 20% of HazMat's. HazMat Reference also leads on in-app purchases (none vs 3) and chart position (#38 vs unranked). HazMat's advantage is price (Free vs $4.99). On rating, ratings volume, update cadence and ads there is nothing between them.

HazMat is free to download; HazMat Reference costs $4.99 up front. HazMat sells 3 in-app purchases, starting at $4.99 per 7 days. HazMat Reference asks for nothing beyond the download.

HazMat Reference holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 1.8K and 1K respectively. Written reviews point the same way: 96% of HazMat Reference's written reviews are positive against 20% of HazMat's.

HazMat Reference ships an update every 4 months, HazMat every 2 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | HazMat Reference | HazMat |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.8 (1.8K ratings)](https://appshunter.io/ios/app/hazmat-reference/id385775821/reviews)** | [4.6 (1K ratings)](https://appshunter.io/ios/app/hazmat-erg-2024-guidebook/id1486387187/reviews) |
| Number of ratings | **1.8K** | 1K |
| Positive reviews | **95.9% of reviews** | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#38** | — |
| Size | 75 MB | 4 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [ThatsMyStapler Inc.](https://appshunter.io/developer/337472637) | [Volodymyr Oliennikov](https://appshunter.io/developer/926116230) |

## What reviewers say

### HazMat Reference

[App page](https://appshunter.io/ios/app/hazmat-reference/id385775821)

**Currently charting:** #38 Top Paid · Reference (US App Store)

Quickly access critical information on hazardous materials for handling, storage, and incident response. Features include advanced search, sorting, and filtering of materials from key regulatory tables and guides. Offline access ensures availability in any situation.

**Highlights:** ERG 2024 data, NIOSH, CFR/HMT, NFPA, GHS information, Advanced search, sort, and filter, Offline access, NFPA Fire Diamond, Physical descriptions and CAS#, DOT incident data filter

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

**In-app purchases:** none

**What reviewers like**

- 💡 Excellent tool
- 🚀 Saves time
- 👍 Handy app
- 👍 User-friendly
- 👍 Great resource

**What reviewers complain about**

- 🐛 Closed unexpectedly
- 🐛 Outdated information
- 👎 Color of distance pages makes it unreadable
- 👎 User interface not great

**Reported bugs**

- Bulk packaging information part of CFR 49 won't load

**Requested features**

- Format for larger phones
- Ability to print guide or reference material


### 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 HazMat Reference free?

HazMat Reference costs $4.99, with no in-app purchases.

### Is HazMat free?

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

### Which has better reviews, HazMat Reference or HazMat?

HazMat Reference is rated higher. HazMat Reference averages 4.8 out of 5 from 1.8K ratings, while HazMat averages 4.6 from 1K ratings.

### Do HazMat Reference or HazMat have ads?

Neither HazMat Reference nor HazMat shows ads.

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

HazMat Reference ships an update every 4 months, and HazMat every 2 months. Most recently, HazMat Reference was updated on November 6, 2026 and HazMat on November 7, 2026.

---

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