# 十万个为什么3 - 认识这个世界的不同

> Comprehensive encyclopedia for children covering science, history, and culture. (iPhone/iPad app by 昌庭 周.)

- Source: https://appshunter.io/ios/app/3/id1313195907 (this page in markdown: same URL + `.md`)
- Developer: [昌庭 周](https://appshunter.io/developer/1063627234)
- Category: Education, Games, Puzzle, Word
- Price: Free
- Rating: 4.90/5 from 16 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 83 MB
- Languages: American English
- Released: 2017-11-21
- Data updated: 2026-08-15
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/3/id1313195907/reviews.md

## What is 十万个为什么3?

这个应用是一个百科类图书，内容涵盖天文、地理、动物、植物、数学、物理、化学、军事、历史、文化、艺术等方面，其知识性、科学性、趣味性并重。
结合少年儿童的知识结构和阅读习惯，以精准生动的文字形象地诠释一个个“为什么”，力图使各门类的知识形成一个系统、科学的有机整体，方便小读者获得及时、全面的知识。
新颖、时尚的设计，在增加信息含量的基础上，使页面变得更加生动、活泼。多种视觉要素的有机结合，为小读者营造一个立体、形象的阅读空间，让小读者在轻松愉悦的问答中获取知识、开阔视野、提升创新力和想象力。

## Key features

- 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

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/3/id1313195907/reviews.md

### 5/5 — Very interesting

*2024-09-29, version 4.0*

Simple knowledge with complex wonders

### 5/5 — 好用

*2024-04-13*

学习百科知识，有用

### 5/5 — 广告

*2022-07-25, version 4.0*

广告

### 5/5 — 不错

*2020-08-19*

不错

### 3/5 — 如果可以搜尋想知道的問題會更好

*2020-06-28, version 3.0*

如果可以搜尋想知道的問題會更好

## Frequently asked questions about 十万个为什么3

### What subjects does Why 3 cover?

Why 3 covers a wide range of subjects including astronomy, geography, animals, plants, mathematics, physics, chemistry, military, history, culture, and art. The app aims to provide a systematic and scientific overview of knowledge.

### How does Why 3 explain concepts?

Why 3 uses precise and vivid text to explain 'why' questions, making complex topics easy for young readers to understand. The app focuses on both the knowledge and the fun aspects of learning.

### What is the design of Why 3 like?

The app features a novel and fashionable design with multiple visual elements to create a立体 (three-dimensional) and vivid reading space. This design aims to make the learning experience more engaging and enjoyable.

### What age group is Why 3 suitable for?

Why 3 is suitable for children aged 4 and above, as indicated by its age rating. The content and design are tailored to the knowledge structure and reading habits of young children.

### Does Why 3 have ads?

Yes, Why 3 contains advertisements. As a free application, it utilizes ads to support its development and maintenance.

### What devices can I use Why 3 on?

Why 3 is available on iPhone, iPad, and iPod. It is designed to be accessible across various Apple mobile devices.

### How often is Why 3 updated?

The latest version of Why 3 is 4.0, and it was last updated on October 23, 2021. While the last update was in 2021, the app's content is comprehensive.

### What is the user rating for Why 3?

Why 3 has a high user rating of 4.9 stars based on 16 ratings. This indicates a generally positive reception from its users.

## Version history (last 4 releases)

### 4.0 — 2021-10-23

修复bug，增加适配

### 3.0 — 2018-04-13

Apple 已更新此 App 以显示 Apple Watch App 图标。

- 修改一些bug

### 2 — 2017-12-06

- 优化页面布局，使页面更美观
- 解决一些小的bug
- 优化内存

### 1.0 — 2017-11-21

No release notes.

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All apps by 昌庭 周: https://appshunter.io/developer/1063627234

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*