# 十万个为什么 vs 第一次遇见科学

The clearest difference is iOS requirement: 十万个为什么 at 8.0 against 第一次遇见科学's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 十万个为什么 sells 2 one-off in-app purchases and 第一次遇见科学 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 十万个为什么 | 第一次遇见科学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 213 MB | 76 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Suzhou MXR Software Technology Co.,Ltd](https://appshunter.io/developer/484812886) | [Shanghai Juvenile & Children's Publishing House Co., Ltd](https://appshunter.io/developer/1449920791) |

## What reviewers say

### 十万个为什么

[App page](https://appshunter.io/ios/app/4d-ar/id1257600706)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25元 | $3.99 | one-time |
| 40元 | $5.99 | one-time |


### 第一次遇见科学

[App page](https://appshunter.io/ios/app/id6474520623)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6阅读币 | $0.99 | one-time |
| 1阅读币 | $0.99 | one-time |
| 12阅读币 | $1.99 | one-time |
| 25阅读币 | $3.99 | one-time |


## Frequently asked questions

### Is 十万个为什么 free?

十万个为什么 is free to download, with in-app purchases available.

### Is 第一次遇见科学 free?

第一次遇见科学 is free to download, with in-app purchases available.

### Do 十万个为什么 or 第一次遇见科学 have ads?

Neither 十万个为什么 nor 第一次遇见科学 shows ads.

### Which is updated more often, 十万个为什么 or 第一次遇见科学?

十万个为什么 ships an update every 3 weeks, and 第一次遇见科学 every 3 weeks. Most recently, 十万个为什么 was updated on October 24, 2026 and 第一次遇见科学 on October 10, 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.*