# Open eClass Mobile vs Telekom Chronos

The clearest difference is monetization model: Open eClass Mobile at free against Telekom Chronos's ad-supported. On price, review sentiment, update cadence and ads there is nothing between them.

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

Open eClass Mobile ships an update every 3 months, Telekom Chronos every 2 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | Open eClass Mobile | Telekom Chronos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.9 (21 ratings)](https://appshunter.io/ios/app/telekom-chronos/id1639539816/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | 2.3% of reviews | **10.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 33 MB | 370 MB |
| Requires iOS | 15.3 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Greek Universities Network](https://appshunter.io/developer/796936705) | [COSMOTE](https://appshunter.io/developer/479520799) |

## What reviewers say

### Open eClass Mobile

[App page](https://appshunter.io/ios/app/open-eclass-mobile/id1398319489)

Access your Open eClass courses and stay updated with the official mobile application. This app provides an alternative way to interact with your educational content, designed to complement the web experience.

**Highlights:** Access Open eClass courses, Stay updated on course content, Alternative to web-app access, Requires active user account, Works with enabled Open eClass sites

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

**In-app purchases:** none


### Telekom Chronos

[App page](https://appshunter.io/ios/app/telekom-chronos/id1639539816)

Explore the Acropolis of Athens with immersive AR, VR, and AI. This free app offers digital reconstructions, interactive tours, and a virtual guide, accessible from anywhere in the world. Enhance your learning experience with cutting-edge technology.

**Highlights:** Augmented and virtual reality exploration, AI-powered digital tour guide (Clio), 3D digital reconstructions of monuments, Interactive audio tours, Accessible globally, on-site or remotely, 5G network optimization for avatar interaction

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Open eClass Mobile free?

Open eClass Mobile is free to download, with no in-app purchases.

### Is Telekom Chronos free?

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

### Do Open eClass Mobile or Telekom Chronos have ads?

Neither Open eClass Mobile nor Telekom Chronos shows ads.

### Which is updated more often, Open eClass Mobile or Telekom Chronos?

Open eClass Mobile ships an update every 3 months, and Telekom Chronos every 2 months. Most recently, Open eClass Mobile was updated on October 14, 2026 and Telekom Chronos on October 14, 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.*