# 清华e同学 vs Inner Mountain

The clearest difference is in-app purchases: 清华e同学 at none against Inner Mountain's 1. 清华e同学 also leads on iOS requirement (9.0 vs 15.0). Inner Mountain's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Inner Mountain sells 1 one-off in-app purchase. 清华e同学 asks for nothing beyond the download.

清华e同学 ships an update every 3 months, Inner Mountain every 2 weeks. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 清华e同学 | Inner Mountain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 33 MB | 97 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Huatan CommTech Co., Ltd.](https://appshunter.io/developer/521621484) | [北京内峰科技有限公司](https://appshunter.io/developer/1845836616) |

## What reviewers say

### 清华e同学

[App page](https://appshunter.io/ios/app/e/id628311483)

**Features:** macOS Compatibility

**In-app purchases:** none


### Inner Mountain

[App page](https://appshunter.io/ios/app/inner-mountain/id6753942488)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inner Mountain Master Class | $59.00 | one-time |


## Frequently asked questions

### Is 清华e同学 free?

清华e同学 is free to download, with no in-app purchases.

### Is Inner Mountain free?

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

### Do 清华e同学 or Inner Mountain have ads?

Neither 清华e同学 nor Inner Mountain shows ads.

### Which is updated more often, 清华e同学 or Inner Mountain?

清华e同学 ships an update every 3 months, and Inner Mountain every 2 weeks. Most recently, 清华e同学 was updated on October 1, 2026 and Inner Mountain on October 8, 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.*