# 知识树 vs PixWhat

The clearest difference is review sentiment: PixWhat at 84% against 知识树's 39%. PixWhat also leads on rating (4.7 vs 4.2) and ratings volume (15 vs 5). On price, update cadence, ads and in-app purchases 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 PixWhat sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PixWhat holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 5 and 15 respectively. Written reviews point the same way: 39% of 知识树's written reviews are positive against 84% of PixWhat's.

知识树 ships an update every 5 days, PixWhat every 4 days. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | 知识树 | PixWhat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/ai/id6505133670/reviews) | **[4.7 (15 ratings)](https://appshunter.io/ios/app/pixwhat-language-learning/id6754788652/reviews)** |
| Number of ratings | 5 | **15** |
| Positive reviews | 38.9% of reviews | **83.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Freemium | Freemium |
| Size | 2 MB | 82 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [野 匡](https://appshunter.io/developer/819954894) | [Wuhan Yuhang Technology Co., Ltd](https://appshunter.io/developer/1795152947) |

## 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 |


### PixWhat

[App page](https://appshunter.io/ios/app/pixwhat-language-learning/id6754788652)

Instantly translate text and objects from photos using AI. Learn new languages with context-aware example sentences and native speaker audio. Ideal for kids, travelers, and students.

**Highlights:** Instant photo translation, AI scene-based example sentences, Native-speaker audio, Supports 10+ languages, Handwritten text recognition, Ad-free experience

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Weekly | $0.99 | per 7 days |
| PixWhat PRO Monthly | $6.99 | per month |
| PixWhat PRO Yearly | $12.99 | per year |
| PixWhat.PRO | $99.99 | one-time |


## Frequently asked questions

### Is 知识树 free?

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

### Is PixWhat free?

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

### Which has better reviews, 知识树 or PixWhat?

PixWhat is rated higher. 知识树 averages 4.2 out of 5 from 5 ratings, while PixWhat averages 4.7 from 15 ratings.

### Do 知识树 or PixWhat have ads?

Neither 知识树 nor PixWhat shows ads.

### Which is updated more often, 知识树 or PixWhat?

知识树 ships an update every 5 days, and PixWhat every 4 days. Most recently, 知识树 was updated on September 23, 2026 and PixWhat on September 24, 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.*