# 打卡水印相机 vs 9Star

The clearest difference is update cadence: 打卡水印相机 at every 3 days against 9Star's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 打卡水印相机 sells 3 in-app purchases, starting at $4.99 per 7 days and 9Star sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

打卡水印相机 ships an update every 3 days, 9Star every 3 weeks. The most recent releases landed on October 6, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 打卡水印相机 | 9Star |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Size | 56 MB | 187 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [洋 张](https://appshunter.io/developer/1776044728) | [常州九颗星智能科技有限公司](https://appshunter.io/developer/1837851511) |

## What reviewers say

### 打卡水印相机

[App page](https://appshunter.io/ios/app/id6738601239)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 打卡水印相机周会员 | $4.99 | per 7 days |
| 打卡水印相机月会员 | $6.99 | per month |
| 打卡水印相机年会员 | $14.99 | per year |


### 9Star

[App page](https://appshunter.io/ios/app/9star/id6764502159)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 9Star月卡会员 | $2.99 | per month |
| 9Star年卡会员 | $19.99 | per year |
| 9Star·永久会员 | $12.99 | one-time |


## Frequently asked questions

### Is 打卡水印相机 free?

打卡水印相机 is free to download, with in-app purchases available.

### Is 9Star free?

9Star is free to download, with in-app purchases available.

### Do 打卡水印相机 or 9Star have ads?

Neither 打卡水印相机 nor 9Star shows ads.

### Which is updated more often, 打卡水印相机 or 9Star?

打卡水印相机 ships an update every 3 days, and 9Star every 3 weeks. Most recently, 打卡水印相机 was updated on October 6, 2026 and 9Star 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.*