# mobilOPAC YourBib vs Kosmos

The clearest difference is update cadence: mobilOPAC YourBib at every 2 months against Kosmos's every 6 months. Kosmos's advantage is iOS requirement (12.2 vs 15.6). On price, review sentiment, 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.

mobilOPAC YourBib ships an update every 2 months, Kosmos every 6 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | mobilOPAC YourBib | Kosmos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/kosmos-plus/id1064921271/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 11.1% of reviews | **16.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 16 MB | 3 MB |
| Requires iOS | 15.6 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [subkom GmbH](https://appshunter.io/developer/363120138) | [Franckh-Kosmos Verlags GmbH & Co. KG](https://appshunter.io/developer/375309682) |

## What reviewers say

### mobilOPAC YourBib

[App page](https://appshunter.io/ios/app/mobilopac-yourbib/id557536072)

Search the catalog of participating libraries on the go. Check out borrowed items, renew them, or reserve new ones. Access important information about your library, including its location.

**Highlights:** Search library catalog, ISBN scanner, View borrowed items, Renew items, Reserve items, Library information, Map view

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

**In-app purchases:** none


### Kosmos

[App page](https://appshunter.io/ios/app/kosmos-plus/id1064921271)

Enhance your reading experience with digital content like videos, audio, and images linked to specific books. Unlock exclusive multimedia materials by entering a code or answering a question from your book. Stream or download content for offline access.

**Highlights:** Access digital book content, Unlock videos, audio, and images, Use book code or answer questions, Stream or download content, Offline access, Organized media lists, Search functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is mobilOPAC YourBib free?

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

### Is Kosmos free?

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

### Do mobilOPAC YourBib or Kosmos have ads?

Neither mobilOPAC YourBib nor Kosmos shows ads.

### Which is updated more often, mobilOPAC YourBib or Kosmos?

mobilOPAC YourBib ships an update every 2 months, and Kosmos every 6 months. Most recently, mobilOPAC YourBib was updated on October 29, 2026 and Kosmos on October 29, 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.*