# Aachen Colloquium vs GreenTech Network

The clearest difference is update cadence: Aachen Colloquium at every 8 days against GreenTech Network's every 5 weeks. On price, ads, 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.

Aachen Colloquium ships an update every 8 days, GreenTech Network every 5 weeks. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Aachen Colloquium | GreenTech Network |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 weeks |
| Size | 145 MB | 146 MB |
| Requires iOS | 17.4 | 17.4 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Aachener Kolloquium Fahrzeug-und Motorentechnik GbR](https://appshunter.io/developer/1534219430) | [SWAPCARD CORPORATION](https://appshunter.io/developer/879488722) |

## What reviewers say

### Aachen Colloquium

[App page](https://appshunter.io/ios/app/aachen-colloquium/id1645129485)

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

**In-app purchases:** none


### GreenTech Network

[App page](https://appshunter.io/ios/app/greentech-network/id6677014186)

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

**In-app purchases:** none


## Frequently asked questions

### Is Aachen Colloquium free?

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

### Is GreenTech Network free?

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

### Do Aachen Colloquium or GreenTech Network have ads?

Neither Aachen Colloquium nor GreenTech Network shows ads.

### Which is updated more often, Aachen Colloquium or GreenTech Network?

Aachen Colloquium ships an update every 8 days, and GreenTech Network every 5 weeks. Most recently, Aachen Colloquium was updated on October 13, 2026 and GreenTech Network on October 3, 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.*