# IGS vs GefahrGutNav

The clearest difference is ads: IGS at none against GefahrGutNav's shown. IGS also leads on iOS requirement (14.0 vs 17.6). GefahrGutNav's advantage is update cadence (every 2 months vs every 8 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IGS ships an update every 8 months, GefahrGutNav every 2 months. The most recent releases landed on November 3, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | IGS | GefahrGutNav |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 246 MB | 13 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KISTERS AG](https://appshunter.io/developer/952206147) | [Samuel Schwarze](https://appshunter.io/developer/600532877) |

## What reviewers say

### 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


### GefahrGutNav

[App page](https://appshunter.io/ios/app/gefahrgutnav/id6474615552)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is IGS free?

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

### Is GefahrGutNav free?

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

### Do IGS or GefahrGutNav have ads?

GefahrGutNav shows ads; IGS does not.

### Which is updated more often, IGS or GefahrGutNav?

IGS ships an update every 8 months, and GefahrGutNav every 2 months. Most recently, IGS was updated on November 3, 2026 and GefahrGutNav on October 18, 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.*