# 心链AI vs 小书童

The clearest difference is in-app purchases: 心链AI at none against 小书童's 2. 小书童's advantage is update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 小书童 sells 2 in-app purchases, starting at $0.99 per month. 心链AI asks for nothing beyond the download.

心链AI ships an update monthly, 小书童 every 3 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | 心链AI | 小书童 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id6770038891/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 8 MB | 79 MB |
| Requires iOS | 17.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [潇 王](https://appshunter.io/developer/1800409027) | [建锋 林](https://appshunter.io/developer/1704174610) |

## What reviewers say

### 心链AI

[App page](https://appshunter.io/ios/app/ai/id6747790776)

**Features:** macOS Compatibility

**In-app purchases:** none


### 小书童

[App page](https://appshunter.io/ios/app/id6770038891)

This app consolidates reading notes from various sources like WeChat Read, Kindle, and physical books. It allows users to search, organize, and reflect on their reading history, with AI-powered insights and audio generation for members.

**Highlights:** Consolidate notes from WeChat Read, Kindle, and physical books, Search notes by keyword, author, or personal thoughts, AI-powered insights and question answering, Generate audio readings of notes and insights, Cross-device synchronization via iCloud, Daily 'Today's Encounter' feature for inspiration, Export notes and reading summaries

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shutong Monthly | $0.99 | per month |
| Shutong Annual | $9.90 | per year |


## Frequently asked questions

### Is 心链AI free?

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

### Is 小书童 free?

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

### Do 心链AI or 小书童 have ads?

Neither 心链AI nor 小书童 shows ads.

### Which is updated more often, 心链AI or 小书童?

心链AI ships an update monthly, and 小书童 every 3 days. Most recently, 心链AI was updated on October 28, 2026 and 小书童 on October 28, 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.*