# GESTIS vs Mengen

The clearest difference is review sentiment: GESTIS at 100% against Mengen's 50%. GESTIS also leads on in-app purchases (none vs 2). Mengen's advantage is update cadence (every 2 months vs every 7 months) and iOS requirement (12.1 vs 14.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Mengen sells 1 one-off in-app purchase. GESTIS asks for nothing beyond the download.

GESTIS ships an update every 7 months, Mengen every 2 months. The most recent releases landed on October 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | GESTIS | Mengen |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 7 MB | 12 MB |
| Requires iOS | 14.0 | **12.1** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deutsche Gesetzliche Unfallversicherung e.V. (DGUV)](https://appshunter.io/developer/487126969) | [DENIOS AG](https://appshunter.io/developer/1527415640) |

## What reviewers say

### GESTIS

[App page](https://appshunter.io/ios/app/gestis-ilv/id487126946)

This reference tool provides international limit values for chemical agents. A web application is now available, as a native mobile app will no longer be supported after January 6, 2025.

**Highlights:** International limit values for chemical agents, Web application access, Reference tool for chemical substances

**In-app purchases:** none


### Mengen

[App page](https://appshunter.io/ios/app/mengen-checker/id1527415638)

This tool simplifies understanding legal texts related to substance storage. It provides quick access to quantity limits and storage classifications for various substance groups, aiding in workplace safety and environmental protection. Get immediate insights without sifting through extensive regulations.

**Highlights:** Consolidates over 100 pages of legal text, Provides quantity limits for storage, Determines storage class for co-storage, Offers tips for safety and environmental protection, Features a practical dial for quick info, Allows saving favorite substance groups

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $0.99 | one-time |


## Frequently asked questions

### Is GESTIS free?

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

### Is Mengen free?

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

### Do GESTIS or Mengen have ads?

Neither GESTIS nor Mengen shows ads.

### Which is updated more often, GESTIS or Mengen?

GESTIS ships an update every 7 months, and Mengen every 2 months. Most recently, GESTIS was updated on October 30, 2026 and Mengen on October 10, 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.*