# Bücherwurm vs Zerlegen

The clearest difference is price: Zerlegen at $0.49 against Bücherwurm's $6.99. Zerlegen also leads on update cadence (every 5 weeks vs every 8 months). Bücherwurm's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 16.0). On ads and in-app purchases there is nothing between them.

Bücherwurm costs $6.99 and Zerlegen $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Bücherwurm ships an update every 8 months, Zerlegen every 5 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Bücherwurm | Zerlegen |
| --- | --- | --- |
| Price | $6.99 | **$0.49** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 171 MB | 52 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ernst Klett Verlag GmbH, Stuttgart](https://appshunter.io/developer/751540887) | [Christian Urff](https://appshunter.io/developer/415894463) |

## What reviewers say

### Bücherwurm

[App page](https://appshunter.io/ios/app/bucherwurm-schulversion/id1612268722)

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

**In-app purchases:** none


### Zerlegen

[App page](https://appshunter.io/ios/app/zerlegen/id6793009177)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bücherwurm free?

Bücherwurm costs $6.99, with no in-app purchases.

### Is Zerlegen free?

Zerlegen costs $0.49, with no in-app purchases.

### Do Bücherwurm or Zerlegen have ads?

Neither Bücherwurm nor Zerlegen shows ads.

### Which is updated more often, Bücherwurm or Zerlegen?

Bücherwurm ships an update every 8 months, and Zerlegen every 5 weeks. Most recently, Bücherwurm was updated on October 16, 2026 and Zerlegen 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.*