# UN Decoder & Hazmat vs HazMatIQ.app

The clearest difference is in-app purchases: HazMatIQ.app at none against UN Decoder & Hazmat's 2. UN Decoder & Hazmat's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. UN Decoder & Hazmat sells 2 in-app purchases, starting at $0.99 per month. HazMatIQ.app asks for nothing beyond the download.

UN Decoder & Hazmat ships an update every 3 weeks, HazMatIQ.app every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | UN Decoder & Hazmat | HazMatIQ.app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hazmatiqapp/id6755795895/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 47 MB | 6 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [AYLIN BICEN](https://appshunter.io/developer/1839275591) | [Drew Toma](https://appshunter.io/developer/6820180626) |

## What reviewers say

### UN Decoder & Hazmat

[App page](https://appshunter.io/ios/app/un-decoder-and-hazmat/id6752623945)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Membeship ( 1 Month ) | $0.99 | per month |
| Pro Membership ( 1 Year ) | $9.99 | per year |


### HazMatIQ.app

[App page](https://appshunter.io/ios/app/hazmatiqapp/id6755795895)

This offline companion app assists trained emergency responders in applying the HazMatIQ system during hazardous materials incidents. It offers rapid access to crucial decision-support information via a streamlined interface, ensuring reliability without internet connectivity.

**Highlights:** Offline functionality, Decision-support information, Streamlined interface, Real-world reliability, Companion resource for trained responders

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UN Decoder & Hazmat free?

UN Decoder & Hazmat is free to download, with in-app purchases available.

### Is HazMatIQ.app free?

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

### Do UN Decoder & Hazmat or HazMatIQ.app have ads?

Neither UN Decoder & Hazmat nor HazMatIQ.app shows ads.

### Which is updated more often, UN Decoder & Hazmat or HazMatIQ.app?

UN Decoder & Hazmat ships an update every 3 weeks, and HazMatIQ.app every 2 months. Most recently, UN Decoder & Hazmat was updated on October 30, 2026 and HazMatIQ.app on October 30, 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.*