# UN Number vs IGS

The clearest difference is review sentiment: UN Number at 63% against IGS's 0%. UN Number also leads on update cadence (every 3 months vs every 8 months) and iOS requirement (11.0 vs 14.0). IGS's advantage is in-app purchases (none vs 5). On price, ads 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. IGS asks for nothing beyond the download.

UN Number ships an update every 3 months, IGS every 8 months. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | UN Number | IGS |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 44 MB | 246 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZWEIDENKER Holding GmbH](https://appshunter.io/developer/307356444) | [KISTERS AG](https://appshunter.io/developer/952206147) |

## 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 |


### IGS

[App page](https://appshunter.io/ios/app/igs-public/id1485234040)

Provides comprehensive information on hazardous materials for the public and emergency responders. Access detailed data on chemical properties, safety measures, and emergency procedures.

**Highlights:** Hazardous material information, Public access, Emergency responder data, Safety measures, Emergency procedures

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

**In-app purchases:** none


## Frequently asked questions

### Is UN Number free?

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

### Is IGS free?

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

### Do UN Number or IGS have ads?

Neither UN Number nor IGS shows ads.

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

UN Number ships an update every 3 months, and IGS every 8 months. Most recently, UN Number was updated on October 31, 2026 and IGS on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*