GESTIS vs Units App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GESTIS
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.
- International limit values for chemical agents
- Web application access
- Reference tool for chemical substances
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GESTIS - International limit values for chemical agents With the reprogramming of our "GESTIS - International Limits" web application, the provision of a native mobile app for iOS is no longer necessary. Therefore, no native app will be available in the respective stores from 06.01.2025. Instead, the web application can be found here: https://www.dguv.de/ifa/gestis/gestis-internationale-grenzwerte-fuer-chemische-substanzen-limit-values-for-chemical-agents/index-2.jsp
Units App
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.
- Multiple unit categories
- Metric and imperial systems
- Conversion history
- Send calculations via email
- iPad multitasking support
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Convert between many units from several categories and different unit systems (metric, imperial, ...). Features: - categories: length, temperature, capacity, weight, energy, power, pressure, area - access previous conversions from the history list - categories have different colors (in the history as well) - flip units - send calculations by email - support for the iPhone 6 and 6+ - support for the iPad multitasking (split view..)
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 September 28, 2026 and September 14, 2026 respectively.
| Parameter | GESTIS | Units App |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 2.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 7 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Deutsche Gesetzliche Unfallversicherung e.V. (DGUV) | Piet Jonas |
Customer experience
GESTIS
Units App
In-app purchases
GESTIS
No in-app purchases
Units App
No in-app purchases
