# 水印相机 vs 计算器i

The clearest difference is iOS requirement: 水印相机 at 12.0 against 计算器i's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 水印相机 sells 1 one-off in-app purchase and 计算器i sells 6 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

水印相机 ships an update every 6 days, 计算器i every 8 days. The most recent releases landed on December 1, 2025 and September 21, 2026 respectively.

## The numbers

| Metric | 水印相机 | 计算器i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (9 ratings)](https://appshunter.io/ios/app/i/id6738602207/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 74.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 8 days |
| Monetization | — | Free with in-app purchases |
| Size | 75 MB | 67 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [成都仓墨科技有限公司](https://appshunter.io/developer/1668641241) | [Chongqing Frozen Technology Co., LTD](https://appshunter.io/developer/1776534078) |

## What reviewers say

### 水印相机

[App page](https://appshunter.io/ios/app/id6479632553)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 水印相机永久会员 | $9.99 | one-time |


### 计算器i

[App page](https://appshunter.io/ios/app/i/id6738602207)

This app offers a powerful currency converter with support for over 170 currencies. It also includes a BMI calculator, date calculator, and a feature to convert numbers to their written Chinese form. Enjoy a clean interface with real-time results and no ads.

**Highlights:** 170+ currency support, BMI calculator, Date calculator, Number to Chinese word conversion, Real-time results, Ad-free experience

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP/月 | $0.99 | per month |
| VIP/月 | $3.99 | per month |
| VIP三个月 | $7.99 | per 3 months |
| VIP半年 | $24.99 | per 6 months |
| VIP/年 | $24.99 | per year |
| VIP/年(定制) | $29.99 | per year |


## Frequently asked questions

### Is 水印相机 free?

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

### Is 计算器i free?

计算器i is free to download, with in-app purchases available.

### Do 水印相机 or 计算器i have ads?

Both 水印相机 and 计算器i show ads.

### Which is updated more often, 水印相机 or 计算器i?

水印相机 ships an update every 6 days, and 计算器i every 8 days. Most recently, 水印相机 was updated on December 1, 2025 and 计算器i on September 21, 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.*