# 海草集 vs KMZ

The clearest difference is iOS requirement: KMZ at 9.0 against 海草集's 12.0. 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.

海草集 ships an update every 3 weeks, KMZ every 10 days. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 海草集 | KMZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 79 MB | 29 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Tianjin Haicaoji Biotechnology Co., Ltd.](https://appshunter.io/developer/1522237926) | [昆明安豆科技有限公司](https://appshunter.io/developer/1486480484) |

## What reviewers say

### 海草集

[App page](https://appshunter.io/ios/app/id6447544944)

**Features:** macOS Compatibility

**In-app purchases:** none


### KMZ

[App page](https://appshunter.io/ios/app/kmz/id6462084886)

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

**In-app purchases:** none


## Frequently asked questions

### Is 海草集 free?

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

### Is KMZ free?

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

### Do 海草集 or KMZ have ads?

Neither 海草集 nor KMZ shows ads.

### Which is updated more often, 海草集 or KMZ?

海草集 ships an update every 3 weeks, and KMZ every 10 days. Most recently, 海草集 was updated on October 3, 2026 and KMZ on October 18, 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.*