# 德申 vs 海草集IM

The clearest difference is iOS requirement: 海草集IM at 10.0 against 德申's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

德申 ships an update every 10 days, 海草集IM every 3 weeks. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 德申 | 海草集IM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 179 MB | 135 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京德申科技有限公司](https://appshunter.io/developer/1464872511) | [Tianjin Haicaoji Biotechnology Co., Ltd.](https://appshunter.io/developer/1522237926) |

## What reviewers say

### 德申

[App page](https://appshunter.io/ios/app/id1464872512)

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

**In-app purchases:** none


### 海草集IM

[App page](https://appshunter.io/ios/app/im/id6474714535)

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

**In-app purchases:** none


## Frequently asked questions

### Is 德申 free?

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

### Is 海草集IM free?

海草集IM is free to download, with no in-app purchases.

### Do 德申 or 海草集IM have ads?

Neither 德申 nor 海草集IM shows ads.

### Which is updated more often, 德申 or 海草集IM?

德申 ships an update every 10 days, and 海草集IM every 3 weeks. Most recently, 德申 was updated on October 19, 2026 and 海草集IM on October 7, 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.*