# 校内外 vs 妙懂生物

The clearest difference is in-app purchases: 妙懂生物 at none against 校内外's 9. 妙懂生物 also leads on update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 校内外 sells 9 one-off in-app purchases. 妙懂生物 asks for nothing beyond the download.

校内外 ships an update every 3 weeks, 妙懂生物 weekly. The most recent releases landed on September 2, 2026 and July 25, 2026 respectively.

## The numbers

| Metric | 校内外 | 妙懂生物 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ar/id6747331633/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 111 MB | 398 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京易连忆生](https://appshunter.io/developer/698457861) | [四川寰视乾坤科技有限公司](https://appshunter.io/developer/1168959978) |

## What reviewers say

### 校内外

[App page](https://appshunter.io/ios/app/id698457858)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 45 XiaoBei = 45 CNY | $6.99 | one-time |
| 98 XiaoBei = 98 CNY | $14.99 | one-time |
| 148 XiaoBei = 148 CNY | $21.99 | one-time |
| 248 XiaoBei = 248 CNY | $37.99 | one-time |
| 348 XiaoBei = 348 CNY | $54.99 | one-time |
| 488 XiaoBei = 488 CNY | $74.99 | one-time |
| 698 XiaoBei = 698 CNY | $109.99 | one-time |
| 898 XiaoBei = 898 CNY | $139.99 | one-time |
| 1098 XiaoBei = 1098 CNY | $169.99 | one-time |


### 妙懂生物

[App page](https://appshunter.io/ios/app/ar/id6747331633)

This app uses AI, AR, and 3D animation to make learning biology engaging for elementary and middle school students. It offers interactive lessons, gamified tasks, and virtual experiments to deepen understanding and retention.

**Highlights:** AI intelligent companion system, AR enhanced reality for visualization, Gamified learning tasks, Interactive lessons and quizzes, 3D animation and real experiments, AI-powered adaptive practice questions

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

**In-app purchases:** none


## Frequently asked questions

### Is 校内外 free?

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

### Is 妙懂生物 free?

妙懂生物 is free to download, with no in-app purchases.

### Do 校内外 or 妙懂生物 have ads?

Neither 校内外 nor 妙懂生物 shows ads.

### Which is updated more often, 校内外 or 妙懂生物?

校内外 ships an update every 3 weeks, and 妙懂生物 weekly. Most recently, 校内外 was updated on September 2, 2026 and 妙懂生物 on July 25, 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.*