# 链存证 vs AI分身术

The clearest difference is iOS requirement: 链存证 at 12.0 against AI分身术's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 链存证 | AI分身术 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 93 MB | 101 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [福建中科星泰数据科技有限公司](https://appshunter.io/developer/1594139079) | [锦春 陈](https://appshunter.io/developer/1829977202) |

## What reviewers say

### 链存证

[App page](https://appshunter.io/ios/app/id1635891559)

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

**In-app purchases:** none


### AI分身术

[App page](https://appshunter.io/ios/app/ai/id6749346562)

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

**In-app purchases:** none


## Frequently asked questions

### Is 链存证 free?

链存证 is free to download, with no in-app purchases.

### Is AI分身术 free?

AI分身术 is free to download, with no in-app purchases.

### Do 链存证 or AI分身术 have ads?

Neither 链存证 nor AI分身术 shows ads.

### Which is updated more often, 链存证 or AI分身术?

链存证 ships an update every 2 months, and AI分身术 every 2 months. Most recently, 链存证 was updated on November 3, 2026 and AI分身术 on October 30, 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.*