# Decon Field Guide vs FireHazmat

The clearest difference is in-app purchases: Decon Field Guide at none against FireHazmat's 2. Decon Field Guide also leads on ratings volume (8 vs 1). FireHazmat's advantage is rating (5.0 vs 4.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FireHazmat sells 2 in-app purchases, starting at $19.99 per year. Decon Field Guide asks for nothing beyond the download.

FireHazmat holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Decon Field Guide has 8 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Decon Field Guide | FireHazmat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (8 ratings)](https://appshunter.io/ios/app/decon-field-guide/id1388378944/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/firehazmat/id6771111687/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 74 MB | 43 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [First Line Technology](https://appshunter.io/developer/1388378943) | [Open Scaffold Labs LLC](https://appshunter.io/developer/1896771762) |

## What reviewers say

### Decon Field Guide

[App page](https://appshunter.io/ios/app/decon-field-guide/id1388378944)

This reference app provides quick and efficient decontamination methods for hundreds of threats. It features a classic Threat Index, pictorial instructions, and an in-app dwell timer to guide users through mission execution. Designed for approved users, it aims to make anyone an instant decontamination expert.

**Highlights:** Threat Index for decontamination methods, Pictorial instructions, In-app dwell timer, Covers hundreds of threats, Designed for approved users

**Features:** macOS Compatibility

**In-app purchases:** none


### FireHazmat

[App page](https://appshunter.io/ios/app/firehazmat/id6771111687)

This offline reference app provides comprehensive data on hazardous materials for emergency responders. It includes detailed chemical information, response guides, and an incident command board for managing incidents.

**Highlights:** 3,541 hazardous materials searchable database, 62 ERG response guides, Protective action distances (Tables 1 & 3), Live evacuation map with wind-aware plume, Visual placard identification grid, Unknown-substance field triage wizard, NIMS/ICS incident command board

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FireHazmat Map (iPhone) | $19.99 | per year |
| FireHazmat Pro (iPad) | $299.00 | per year |


## Frequently asked questions

### Is Decon Field Guide free?

Decon Field Guide is free to download, with no in-app purchases.

### Is FireHazmat free?

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

### Which has better reviews, Decon Field Guide or FireHazmat?

FireHazmat is rated higher. Decon Field Guide averages 4.6 out of 5 from 8 ratings, while FireHazmat averages 5.0 from 1 ratings.

### Do Decon Field Guide or FireHazmat have ads?

Neither Decon Field Guide nor FireHazmat shows ads.

### Which is updated more often, Decon Field Guide or FireHazmat?

Decon Field Guide ships an update every 2 months, and FireHazmat every 2 months. Most recently, Decon Field Guide was updated on October 24, 2026 and FireHazmat on October 6, 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.*