# GESTIS vs Units App

The clearest difference is price: GESTIS at Free against Units App's $0.99. Units App's advantage is iOS requirement (12.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

GESTIS is free to download; Units App costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GESTIS ships an update every 7 months, Units App every 9 months. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | GESTIS | Units App |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/units-app/id510085915/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | **Free** | Paid |
| Size | 7 MB | 2 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deutsche Gesetzliche Unfallversicherung e.V. (DGUV)](https://appshunter.io/developer/487126969) | [Piet Jonas](https://appshunter.io/developer/288060167) |

## 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


### Units App

[App page](https://appshunter.io/ios/app/units-app/id510085915)

Easily convert between various units across multiple categories including length, temperature, and weight. Access past conversions through a history list and send calculations via email. Supports a wide range of Apple devices.

**Highlights:** Multiple unit categories, Metric and imperial systems, Conversion history, Send calculations via email, iPad multitasking support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GESTIS free?

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

### Is Units App free?

Units App costs $0.99, with no in-app purchases.

### Do GESTIS or Units App have ads?

Neither GESTIS nor Units App shows ads.

### Which is updated more often, GESTIS or Units App?

GESTIS ships an update every 7 months, and Units App every 9 months. Most recently, GESTIS was updated on October 14, 2026 and Units App on October 1, 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.*