# 杜依妮 vs 甲基源硒

The clearest difference is update cadence: 杜依妮 at every 2 months against 甲基源硒's every 9 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.

杜依妮 ships an update every 2 months, 甲基源硒 every 9 months. The most recent releases landed on September 13, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 杜依妮 | 甲基源硒 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 51 MB | 38 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Chengdu Sumeiren Trading Co.,Ltd](https://appshunter.io/developer/1718707574) | [Beijing Jishi Selenium Source Biotechnology Development Co., Ltd](https://appshunter.io/developer/1720741832) |

## What reviewers say

### 杜依妮

[App page](https://appshunter.io/ios/app/id6473254424)

**Features:** macOS Compatibility

**In-app purchases:** none


### 甲基源硒

[App page](https://appshunter.io/ios/app/id6474135138)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 杜依妮 free?

杜依妮 is free to download, with no in-app purchases.

### Is 甲基源硒 free?

甲基源硒 is free to download, with no in-app purchases.

### Do 杜依妮 or 甲基源硒 have ads?

Neither 杜依妮 nor 甲基源硒 shows ads.

### Which is updated more often, 杜依妮 or 甲基源硒?

杜依妮 ships an update every 2 months, and 甲基源硒 every 9 months. Most recently, 杜依妮 was updated on September 13, 2026 and 甲基源硒 on September 23, 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.*