# e差旅 vs 三叠云

The clearest difference is update cadence: 三叠云 at every 3 weeks against e差旅's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

e差旅 ships an update every 2 months, 三叠云 every 3 weeks. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | e差旅 | 三叠云 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 15 MB | 145 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [青岛易飞国际航空旅游服务有限公司](https://appshunter.io/developer/1387273629) | [Guangzhou AI3D Technology Co., Ltd.](https://appshunter.io/developer/1622552523) |

## What reviewers say

### e差旅

[App page](https://appshunter.io/ios/app/e/id1387273630)

**Features:** macOS Compatibility

**In-app purchases:** none


### 三叠云

[App page](https://appshunter.io/ios/app/id1622552521)

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

**In-app purchases:** none


## Frequently asked questions

### Is e差旅 free?

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

### Is 三叠云 free?

三叠云 is free to download, with no in-app purchases.

### Do e差旅 or 三叠云 have ads?

Neither e差旅 nor 三叠云 shows ads.

### Which is updated more often, e差旅 or 三叠云?

e差旅 ships an update every 2 months, and 三叠云 every 3 weeks. Most recently, e差旅 was updated on October 13, 2026 and 三叠云 on October 17, 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.*