# 21天计划 vs LinkSet

The clearest difference is in-app purchases: 21天计划 at none against LinkSet's 3. 21天计划 also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. LinkSet sells 3 in-app purchases, starting at $0.99 per month. 21天计划 asks for nothing beyond the download.

## The numbers

| Metric | 21天计划 | LinkSet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/linkset-link-manager/id6757075244/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | — | Freemium |
| Size | 42 MB | 26 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [红升 孙](https://appshunter.io/developer/1502418960) | [华庭 刘](https://appshunter.io/developer/1863705200) |

## What reviewers say

### 21天计划

[App page](https://appshunter.io/ios/app/21/id6754164973)

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

**In-app purchases:** none


### LinkSet

[App page](https://appshunter.io/ios/app/linkset-link-manager/id6757075244)

Organize, search, and manage all your important URLs across iPhone, iPad, and Mac. Features AI-powered categorization, automatic metadata extraction, and smart duplicate/broken link detection. Offers private folders and local encrypted data storage for enhanced privacy.

**Highlights:** Cross-platform sync via iCloud, AI-powered automatic categorization, Universal link support with metadata extraction, Duplicate and broken link detection, Private folders and local encrypted storage, List and card view options, Import/export bookmarks

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $9.99 | per year |
| Lifetime Premium | $12.99 | one-time |


## Frequently asked questions

### Is 21天计划 free?

21天计划 is free to download, with no in-app purchases.

### Is LinkSet free?

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

### Do 21天计划 or LinkSet have ads?

Neither 21天计划 nor LinkSet 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.*