# 视力启蒙 vs Digital Sun Dial

The clearest difference is price: 视力启蒙 at Free against Digital Sun Dial's $1.99. 视力启蒙 also leads on iOS requirement (12.0 vs 16.6). Digital Sun Dial's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

视力启蒙 is free to download; Digital Sun Dial costs $1.99 up front. 视力启蒙 sells 1 one-off in-app purchase. Digital Sun Dial asks for nothing beyond the download.

## The numbers

| Metric | 视力启蒙 | Digital Sun Dial |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Daily |
| Size | 25 MB | 49 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [敬 潘](https://appshunter.io/developer/1630712468) | [MICHAEL JOHN HAMILTON](https://appshunter.io/developer/1820670753) |

## What reviewers say

### 视力启蒙

[App page](https://appshunter.io/ios/app/id6737162932)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional | $2.99 | one-time |


### Digital Sun Dial

[App page](https://appshunter.io/ios/app/digital-sun-dial/id6748704583)

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

**In-app purchases:** none


## Frequently asked questions

### Is 视力启蒙 free?

视力启蒙 is free to download, with in-app purchases available.

### Is Digital Sun Dial free?

Digital Sun Dial costs $1.99, with no in-app purchases.

### Do 视力启蒙 or Digital Sun Dial have ads?

Neither 视力启蒙 nor Digital Sun Dial 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.*