# UME Messenger vs DECHEMA

The clearest difference is iOS requirement: DECHEMA at 13.0 against UME Messenger's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

UME Messenger ships an update every 2 months, DECHEMA monthly. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | UME Messenger | DECHEMA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 81 MB | 15 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Universitaetsmedizin Essen](https://appshunter.io/developer/1540967560) | [DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e.V.](https://appshunter.io/developer/1277000376) |

## What reviewers say

### UME Messenger

[App page](https://appshunter.io/ios/app/ume-messenger/id1542580808)

**Features:** macOS Compatibility

**In-app purchases:** none


### DECHEMA

[App page](https://appshunter.io/ios/app/dechema-app/id6477532389)

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

**In-app purchases:** none


## Frequently asked questions

### Is UME Messenger free?

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

### Is DECHEMA free?

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

### Do UME Messenger or DECHEMA have ads?

Neither UME Messenger nor DECHEMA shows ads.

### Which is updated more often, UME Messenger or DECHEMA?

UME Messenger ships an update every 2 months, and DECHEMA monthly. Most recently, UME Messenger was updated on October 27, 2026 and DECHEMA on November 4, 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.*