# 洞识：15分钟摘要 vs 小读书

The clearest difference is rating: 洞识：15分钟摘要 at 3.7 against 小读书's 1.0. 洞识：15分钟摘要 also leads on ratings volume (3 vs 1) and iOS requirement (15.6 vs 17.0). 小读书's advantage is in-app purchases (none vs 5) and review sentiment (100% vs 67%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 洞识：15分钟摘要 sells 5 in-app purchases, starting at $4.99 per month. 小读书 asks for nothing beyond the download.

洞识：15分钟摘要 holds the better App Store score, 3.7 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews complicate that: 67% of 洞识：15分钟摘要's written reviews are positive against 100% of 小读书's, so the app with the better star average is not the one people write more warmly about.

洞识：15分钟摘要 ships an update weekly, 小读书 every 8 days. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 洞识：15分钟摘要 | 小读书 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/15/id6477327844/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/3ai/id6743986609/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 12 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [文亮 邝](https://appshunter.io/developer/1727426190) | [zhijun li](https://appshunter.io/developer/1047598269) |

## What reviewers say

### 洞识：15分钟摘要

[App page](https://appshunter.io/ios/app/15/id6477327844)

This app offers interactive learning experiences to distill core insights from books in just 15 minutes. It provides daily updates and personalized recommendations across various fields, making learning accessible and engaging.

**Highlights:** Interactive learning modules, Daily updated free content, Personalized learning paths, Covers diverse fields, Mobile knowledge library, In-app customer support

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员月度订阅 | $4.99 | per month |
| 年度会员 | $29.99 | per year |
| 年度会员：首周免费 | $29.99 | per year |
| 年度会员：首周免费 | $39.99 | per year |
| 年度会员 | $39.99 | per year |


### 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


## Frequently asked questions

### Is 洞识：15分钟摘要 free?

洞识：15分钟摘要 is free to download, with in-app purchases available.

### Is 小读书 free?

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

### Which has better reviews, 洞识：15分钟摘要 or 小读书?

洞识：15分钟摘要 is rated higher. 洞识：15分钟摘要 averages 3.7 out of 5 from 3 ratings, while 小读书 averages 1.0 from 1 ratings.

### Do 洞识：15分钟摘要 or 小读书 have ads?

Neither 洞识：15分钟摘要 nor 小读书 shows ads.

### Which is updated more often, 洞识：15分钟摘要 or 小读书?

洞识：15分钟摘要 ships an update weekly, and 小读书 every 8 days. Most recently, 洞识：15分钟摘要 was updated on October 4, 2026 and 小读书 on October 9, 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.*