# 小读书 vs Wunder

The clearest difference is monetization model: 小读书 at free against Wunder's free with in-app purchases. Wunder's advantage is update cadence (every 2 days vs every 8 days). 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.

小读书 ships an update every 8 days, Wunder every 2 days. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 小读书 | Wunder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/3ai/id6743986609/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 324 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [zhijun li](https://appshunter.io/developer/1047598269) | [国城 林](https://appshunter.io/developer/1839670511) |

## What reviewers say

### 小读书

[App page](https://appshunter.io/ios/app/3ai/id6743986609)

This AI-powered reading companion offers intelligent book summaries, AI-assisted note refinement, personalized reading lists, and generated reading guides. It helps users efficiently process book content, organize notes, and navigate their reading journey with ease.

**Highlights:** AI-generated book summaries, AI-assisted note refinement, Personalized reading list creation, Reading guide generation, AI book discussions, Curated book selection

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

**In-app purchases:** none


### Wunder

[App page](https://appshunter.io/ios/app/wunder-3d-bookshelf-reader/id6761174770)

Organize your personal library of EPUB, TXT, and PDF files on a virtual bookshelf. Enjoy reading with annotation tools or listen to your books with read-aloud playback. Save and share highlighted passages as note cards.

**Highlights:** 3D virtual bookshelf organization, EPUB, TXT, PDF file support, Read-aloud playback, Highlighting and annotation, Note card creation from excerpts, Bookmark management

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

**In-app purchases:** none


## Frequently asked questions

### Is 小读书 free?

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

### Is Wunder free?

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

### Do 小读书 or Wunder have ads?

Neither 小读书 nor Wunder shows ads.

### Which is updated more often, 小读书 or Wunder?

小读书 ships an update every 8 days, and Wunder every 2 days. Most recently, 小读书 was updated on October 9, 2026 and Wunder on October 11, 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.*