# mobilOPAC YourBib vs WALHALLA Reader

The clearest difference is update cadence: mobilOPAC YourBib at every 2 months against WALHALLA Reader's every 3 months. 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.

mobilOPAC YourBib ships an update every 2 months, WALHALLA Reader every 3 months. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | mobilOPAC YourBib | WALHALLA Reader |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 16 MB | 18 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [subkom GmbH](https://appshunter.io/developer/363120138) | [Walhalla u. Praetoria Verlag GmbH & Co. KG Mobile Applications](https://appshunter.io/developer/488879174) |

## 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


### WALHALLA Reader

[App page](https://appshunter.io/ios/app/walhalla-reader/id1557693051)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is mobilOPAC YourBib free?

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

### Is WALHALLA Reader free?

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

### Do mobilOPAC YourBib or WALHALLA Reader have ads?

Neither mobilOPAC YourBib nor WALHALLA Reader shows ads.

### Which is updated more often, mobilOPAC YourBib or WALHALLA Reader?

mobilOPAC YourBib ships an update every 2 months, and WALHALLA Reader every 3 months. Most recently, mobilOPAC YourBib was updated on October 7, 2026 and WALHALLA Reader on October 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.*