# 暗礁计算器 vs WatchRSS+

The clearest difference is price: 暗礁计算器 at Free against WatchRSS+'s $0.99. 暗礁计算器 also leads on iOS requirement (13.0 vs 16.6). On ads, in-app purchases and device support there is nothing between them.

暗礁计算器 is free to download; WatchRSS+ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 暗礁计算器 | WatchRSS+ |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 1 MB | 8 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [浩源 陈](https://appshunter.io/developer/1665506236) | [鑫 白](https://appshunter.io/developer/1792208860) |

## What reviewers say

### 暗礁计算器

[App page](https://appshunter.io/ios/app/id6748670022)

**Features:** Apple Watch app

**In-app purchases:** none


### WatchRSS+

[App page](https://appshunter.io/ios/app/watchrss-plus/id6766856664)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 暗礁计算器 free?

暗礁计算器 is free to download, with no in-app purchases.

### Is WatchRSS+ free?

WatchRSS+ costs $0.99, with no in-app purchases.

### Do 暗礁计算器 or WatchRSS+ have ads?

Neither 暗礁计算器 nor WatchRSS+ shows ads.

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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.*