# Aachen Colloquium vs eSteel AR

The clearest difference is update cadence: Aachen Colloquium at every 8 days against eSteel AR's every 5 months. eSteel AR's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.4). On price, 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.

Aachen Colloquium ships an update every 8 days, eSteel AR every 5 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Aachen Colloquium | eSteel AR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 months |
| Size | 145 MB | 260 MB |
| Requires iOS | 17.4 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Aachener Kolloquium Fahrzeug-und Motorentechnik GbR](https://appshunter.io/developer/1534219430) | [Fast Effect LLC](https://appshunter.io/developer/1063801632) |

## 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


### eSteel AR

[App page](https://appshunter.io/ios/app/esteel-ar/id6464433244)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aachen Colloquium free?

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

### Is eSteel AR free?

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

### Do Aachen Colloquium or eSteel AR have ads?

Neither Aachen Colloquium nor eSteel AR shows ads.

### Which is updated more often, Aachen Colloquium or eSteel AR?

Aachen Colloquium ships an update every 8 days, and eSteel AR every 5 months. Most recently, Aachen Colloquium was updated on November 3, 2026 and eSteel AR on November 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.*