# UN Decoder & Hazmat vs QuickWindChk

The clearest difference is in-app purchases: QuickWindChk at none against UN Decoder & Hazmat's 2. UN Decoder & Hazmat's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, 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. QuickWindChk asks for nothing beyond the download.

UN Decoder & Hazmat ships an update monthly, QuickWindChk every 3 weeks. The most recent releases landed on September 14, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | UN Decoder & Hazmat | QuickWindChk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 47 MB | 29 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [AYLIN BICEN](https://appshunter.io/developer/1839275591) | [SEUNGSOO YOU](https://appshunter.io/developer/1785034668) |

## 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 |


### QuickWindChk

[App page](https://appshunter.io/ios/app/quickwindchk/id6759914140)

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

**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 QuickWindChk free?

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

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

Neither UN Decoder & Hazmat nor QuickWindChk shows ads.

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

UN Decoder & Hazmat ships an update monthly, and QuickWindChk every 3 weeks. Most recently, UN Decoder & Hazmat was updated on September 14, 2026 and QuickWindChk on September 2, 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.*