# NAVHAZCHECK vs UN Decoder & Hazmat

The clearest difference is in-app purchases: NAVHAZCHECK at none against UN Decoder & Hazmat's 2. UN Decoder & Hazmat's advantage is update cadence (every 3 weeks vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

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

NAVHAZCHECK ships an update every 7 months, UN Decoder & Hazmat every 3 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | NAVHAZCHECK | UN Decoder & Hazmat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/navhazcheck/id6478697236/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 559 MB | 47 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NAVSUP Business Systems Center (BSC)](https://appshunter.io/developer/1102534584) | [AYLIN BICEN](https://appshunter.io/developer/1839275591) |

## What reviewers say

### NAVHAZCHECK

[App page](https://appshunter.io/ios/app/navhazcheck/id6478697236)

Access critical HAZMAT data and manage locker storage information. This tool provides essential details for hazardous materials and supports locker inventory management.

**Highlights:** HAZMAT data search, Locker storage management, Access critical information, Inventory support

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is NAVHAZCHECK free?

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

### Is UN Decoder & Hazmat free?

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

### Do NAVHAZCHECK or UN Decoder & Hazmat have ads?

Neither NAVHAZCHECK nor UN Decoder & Hazmat shows ads.

### Which is updated more often, NAVHAZCHECK or UN Decoder & Hazmat?

NAVHAZCHECK ships an update every 7 months, and UN Decoder & Hazmat every 3 weeks. Most recently, NAVHAZCHECK was updated on November 4, 2026 and UN Decoder & Hazmat 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.*