# Public Bookshelf vs BlitzWissen

The clearest difference is price: BlitzWissen at Free against Public Bookshelf's $0.99. BlitzWissen also leads on update cadence (every 4 days vs every 4 months) and review sentiment (100% vs 87%). Public Bookshelf's advantage is in-app purchases (none vs 10). On ads and device support there is nothing between them.

BlitzWissen is free to download; Public Bookshelf costs $0.99 up front. BlitzWissen sells 10 one-off in-app purchases. Public Bookshelf asks for nothing beyond the download.

Public Bookshelf ships an update every 4 months, BlitzWissen every 4 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Public Bookshelf | BlitzWissen |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 87.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 44 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Trauth](https://appshunter.io/developer/1073103749) | [BlitzWissen](https://appshunter.io/developer/1811410598) |

## What reviewers say

### Public Bookshelf

[App page](https://appshunter.io/ios/app/public-bookshelf/id1243419632)

Discover free public libraries and book exchange spots in your area. Contribute to a growing database by adding, editing, or removing bookshelf locations and details like opening times and contact info.

**Highlights:** Find public bookshelves on a map, Add new bookshelf locations, Edit existing bookshelf information, View bookshelf opening times, Contribute to a community database

**Features:** Vision Pro support

**In-app purchases:** none


### BlitzWissen

[App page](https://appshunter.io/ios/app/blitzwissen/id6745228437)

Access concise summaries of influential books in under 25 minutes, covering politics, history, and science. Enjoy audio versions for on-the-go learning and explore full audiobooks. Download content for offline listening and adjust playback speed.

**Highlights:** Book summaries under 25 minutes, Audio versions for on-the-go, Full audiobook library, Offline download functionality, Adjustable playback speed, Monthly cancellable subscription

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Der Fall Wagner | $1.99 | one-time |
| Der Fall Wagner | $3.90 | one-time |
| Aristokratie. Eine Streitschrift | $3.95 | one-time |
| Jenseits von Gut und Böse | $3.95 | one-time |
| Aristokratie. Eine Streitschrift | $8.90 | one-time |
| Jenseits von Gut und Böse | $8.90 | one-time |
| Geschenkkarte 1 Monat | $9.90 | one-time |
| Geschenkkarte 3 Monate | $24.90 | one-time |
| Geschenkkarte 6 Monate | $49.90 | one-time |
| Geschenkkarte 12 Monate | $99.99 | one-time |


## Frequently asked questions

### Is Public Bookshelf free?

Public Bookshelf costs $0.99, with no in-app purchases.

### Is BlitzWissen free?

BlitzWissen is free to download, with in-app purchases available.

### Do Public Bookshelf or BlitzWissen have ads?

Neither Public Bookshelf nor BlitzWissen shows ads.

### Which is updated more often, Public Bookshelf or BlitzWissen?

Public Bookshelf ships an update every 4 months, and BlitzWissen every 4 days. Most recently, Public Bookshelf was updated on November 6, 2026 and BlitzWissen on November 5, 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.*