# By0 vs AI分身术

The clearest difference is update cadence: By0 at every 3 days against AI分身术's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

By0 ships an update every 3 days, AI分身术 every 2 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | By0 | AI分身术 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 25 MB | 101 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [6ix USA Inc](https://appshunter.io/developer/1648893338) | [锦春 陈](https://appshunter.io/developer/1829977202) |

## What reviewers say

### By0

[App page](https://appshunter.io/ios/app/by0-ai-chat-assistant/id6741533659)

**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 By0 free?

By0 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 By0 or AI分身术 have ads?

Neither By0 nor AI分身术 shows ads.

### Which is updated more often, By0 or AI分身术?

By0 ships an update every 3 days, and AI分身术 every 2 months. Most recently, By0 was updated on October 28, 2026 and AI分身术 on October 28, 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.*