# 知识树 vs 小词书

The clearest difference is rating: 小词书 at 5.0 against 知识树's 4.2. 小词书 also leads on monetization model (free vs freemium). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 知识树 sells 4 in-app purchases, starting at $2.99 per month and 小词书 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

小词书 holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

知识树 ships an update every 5 days, 小词书 weekly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 知识树 | 小词书 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/ai/id6505133670/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/a4/id6751853827/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 38.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Freemium | **Free** |
| Size | 2 MB | 35 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [野 匡](https://appshunter.io/developer/819954894) | [金超 杜](https://appshunter.io/developer/1813785741) |

## What reviewers say

### 知识树

[App page](https://appshunter.io/ios/app/ai/id6505133670)

This intelligent learning system uses AI to understand knowledge, break down concepts, and dynamically schedule practice and review based on your memory state. It focuses on true retention through spaced repetition and scientific memory curves, not just completing exercises.

**Highlights:** AI-driven knowledge understanding, Dynamic practice and review scheduling, Breakdown of knowledge into testable points, Spaced repetition for long-term memory, Automatic assessment of mastery, Progress tracking over speed

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $2.99 | per month |
| 季度会员 | $4.99 | per 3 months |
| 年度会员 | $19.99 | per year |
| 终身会员 | $24.99 | one-time |


### 小词书

[App page](https://appshunter.io/ios/app/a4/id6751853827)

This app simplifies vocabulary learning with intuitive swipe gestures, mimicking a proven A4 paper method. It utilizes spaced repetition and focus modes to enhance memorization without distractions like scores or leaderboards. Users can learn from built-in or custom word lists and track progress visually.

**Highlights:** Intuitive swipe gestures for learning, Spaced repetition algorithm, Focus modes for distraction-free study, Built-in and custom word lists, Progress tracking with heatmaps and charts, Customizable interface and automatic backup

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小词书Plus | $4.99 | one-time |


## Frequently asked questions

### Is 知识树 free?

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

### Is 小词书 free?

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

### Which has better reviews, 知识树 or 小词书?

小词书 is rated higher. 知识树 averages 4.2 out of 5 from 5 ratings, while 小词书 averages 5.0 from 2 ratings.

### Do 知识树 or 小词书 have ads?

Neither 知识树 nor 小词书 shows ads.

### Which is updated more often, 知识树 or 小词书?

知识树 ships an update every 5 days, and 小词书 weekly. Most recently, 知识树 was updated on September 23, 2026 and 小词书 on September 13, 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.*