# 十万个为什么3 vs 古文岛

The clearest difference is in-app purchases: 十万个为什么3 at none against 古文岛's 10. 十万个为什么3 also leads on iOS requirement (10.0 vs 15.5). 古文岛's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 4 months). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. 古文岛 sells 10 in-app purchases, starting at $0.99 per month. 十万个为什么3 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for 十万个为什么3 against 4.6 for 古文岛. That said, the two scores are not equally well evidenced: 古文岛 has 128 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 80% of 十万个为什么3's written reviews are positive against 85% of 古文岛's.

十万个为什么3 ships an update every 4 months, 古文岛 every 2 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 十万个为什么3 | 古文岛 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (17 ratings)](https://appshunter.io/ios/app/3/id1313195907/reviews) | **[4.6 (128 ratings)](https://appshunter.io/ios/app/id1573685904/reviews)** |
| Number of ratings | 17 | **128** |
| Positive reviews | 80.0% of reviews | **84.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Ad-supported** | Freemium |
| Size | 83 MB | 171 MB |
| Requires iOS | **10.0** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [昌庭 周](https://appshunter.io/developer/1063627234) | [Chongqing Dianshigu Technology Co., Ltd.](https://appshunter.io/developer/964708974) |

## What reviewers say

### 十万个为什么3

[App page](https://appshunter.io/ios/app/3/id1313195907)

This educational app offers a comprehensive encyclopedia covering science, history, culture, and more. It explains complex topics with engaging text and visuals, designed to spark curiosity and broaden young readers' horizons.

**Highlights:** Covers astronomy, geography, biology, math, physics, chemistry, Explains 'why' questions with vivid text, Systematic and scientific knowledge organization, Engaging and lively page design, Enhances creativity and imagination, Interactive Q&A format

**Features:** macOS Compatibility

**In-app purchases:** none


### 古文岛

[App page](https://appshunter.io/ios/app/id1573685904)

This app is a comprehensive platform for learning classical Chinese literature and poetry. It offers translations, annotations, pronunciation guides, and recitation features. It also includes study plans, exam analysis, and downloadable lesson templates for students and educators.

**Highlights:** Comprehensive content for learning classical Chinese, Includes translations, annotations, and pronunciation, Recitation features and customizable study plans, Exam analysis and study aids for students, Downloadable lesson templates for teachers, Extensive collection of classic Chinese texts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 纯净模式1个月 | $0.99 | per month |
| 金紫会员1个月 | $1.99 | per month |
| 纯净模式6个月 | $4.49 | per 6 months |
| 金紫会员6个月 | $6.99 | per 6 months |
| 纯净模式12个月 | $7.49 | per year |
| 金紫会员12个月 | $11.99 | per year |
| 下载次数 | $0.99 | one-time |
| 纯净模式永久 | $29.99 | one-time |
| 永久金紫会员 | $39.99 | one-time |
| 金紫会员永久 | $39.99 | one-time |

**What reviewers like**

- 📚 Comprehensive content coverage
- 📱 Intuitive and clean UI
- 💡 Useful annotation and note-taking
- 🚀 Smooth app performance
- 👍 Easy to use

**What reviewers complain about**

- 💸 Frequent subscription pop-ups
- 😠 Annoying and intrusive ads
- ⚠️ Limited free features
- 📉 Decreasing usability for free users
- 🚫 Some content restricted to VIP

**Reported bugs**

- App does not open
- Inconsistent audio and text synchronization
- Cannot use Traditional Chinese characters for input
- Desktop widget removed after update
- Split-screen display is not fully rendered

**Requested features**

- Support for Traditional Chinese characters in search
- Add a 小篆 font (preferably Chongxi small seal)
- Improve audio recitation quality and selection
- Add a timer for audio playback
- Increase the limit for text annotations


## Frequently asked questions

### Is 十万个为什么3 free?

十万个为什么3 is free to download, with no in-app purchases.

### Is 古文岛 free?

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

### Which has better reviews, 十万个为什么3 or 古文岛?

古文岛 is rated higher. 十万个为什么3 averages 4.6 out of 5 from 17 ratings, while 古文岛 averages 4.6 from 128 ratings.

### Do 十万个为什么3 or 古文岛 have ads?

十万个为什么3 shows ads; 古文岛 does not.

### Which is updated more often, 十万个为什么3 or 古文岛?

十万个为什么3 ships an update every 4 months, and 古文岛 every 2 weeks. Most recently, 十万个为什么3 was updated on November 2, 2026 and 古文岛 on November 7, 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.*