# 暗礁计算器 vs Doing Now

The clearest difference is in-app purchases: 暗礁计算器 at none against Doing Now's 2. 暗礁计算器 also leads on iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Doing Now sells 2 in-app purchases, starting at $0.99 per month. 暗礁计算器 asks for nothing beyond the download.

## The numbers

| Metric | 暗礁计算器 | Doing Now |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 1 MB | 19 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [浩源 陈](https://appshunter.io/developer/1665506236) | [朝军 余](https://appshunter.io/developer/1810122551) |

## What reviewers say

### 暗礁计算器

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

**Features:** Apple Watch app

**In-app purchases:** none


### Doing Now

[App page](https://appshunter.io/ios/app/doing-now-ai/id6791571732)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Doing Now | $0.99 | per month |
| Doing Now | $9.99 | per year |


## 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 Doing Now free?

Doing Now is free to download, with in-app purchases available.

### Do 暗礁计算器 or Doing Now have ads?

Neither 暗礁计算器 nor Doing Now shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*