# UN Number vs HectometerPaal

The clearest difference is update cadence: UN Number at every 3 months against HectometerPaal's every 8 months. UN Number also leads on iOS requirement (11.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. UN Number sells 5 in-app purchases, starting at $1.99 per month and HectometerPaal sells 1 in-app purchase, starting at $9.49 per year. Whichever you choose, the download price is not the number that matters.

UN Number ships an update every 3 months, HectometerPaal every 8 months. The most recent releases landed on November 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | UN Number | HectometerPaal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (55 ratings)](https://appshunter.io/ios/app/un-number/id307373793/reviews)** | — |
| Number of ratings | **55** | — |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 18 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZWEIDENKER Holding GmbH](https://appshunter.io/developer/307356444) | [Julian van Heek](https://appshunter.io/developer/1520071706) |

## What reviewers say

### UN Number

[App page](https://appshunter.io/ios/app/un-number/id307373793)

Quickly access essential information for hazardous materials emergencies. This reference guide provides detailed data based on established emergency response cards, usable even without an internet connection. It's designed for rapid retrieval of critical details in critical situations.

**Highlights:** Enter UN numbers via keypad, Quick information retrieval, Based on ERI-Cards, Offline functionality, Categorized data display, User-friendly interface

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UN⁺ Monthly | $1.99 | per month |
| UN⁺ Yearly | $17.99 | per year |
| ADR Label | $0.99 | one-time |
| Hazard Diamond | $0.99 | one-time |
| Hommel | $2.99 | one-time |


### HectometerPaal

[App page](https://appshunter.io/ios/app/hectometerpaal/id1610201970)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertentievrij | $9.49 | per year |


## Frequently asked questions

### Is UN Number free?

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

### Is HectometerPaal free?

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

### Do UN Number or HectometerPaal have ads?

Neither UN Number nor HectometerPaal shows ads.

### Which is updated more often, UN Number or HectometerPaal?

UN Number ships an update every 3 months, and HectometerPaal every 8 months. Most recently, UN Number was updated on November 6, 2026 and HectometerPaal on October 19, 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.*