# 格致 vs 比特纪

The clearest difference is in-app purchases: 比特纪 at none against 格致's 3. 比特纪 also leads on update cadence (weekly vs monthly). 格致's advantage is ads (none vs shown) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. 格致 sells 3 one-off in-app purchases. 比特纪 asks for nothing beyond the download.

格致 ships an update monthly, 比特纪 weekly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 格致 | 比特纪 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ai/id6657983900/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free |
| Size | 48 MB | 317 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [上海白镜信息网络科技有限公司](https://appshunter.io/developer/1576645416) | [Shanghai Bipo Information Technology Co., Limited](https://appshunter.io/developer/1784419827) |

## What reviewers say

### 格致

[App page](https://appshunter.io/ios/app/id1576645294)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月费会员 | $3.99 | one-time |
| 年费会员 | $39.99 | one-time |
| 365天致友身份 | $39.99 | one-time |


### 比特纪

[App page](https://appshunter.io/ios/app/ai/id6657983900)

This app offers a unique companionship experience with an AI that grows, remembers, and empathizes with you. It creates a personalized AI partner that lives its own life and shares its experiences, providing emotional support through voice interactions.

**Highlights:** Personalized AI companion, AI with memory and empathy, AI with independent life, Interactive voice communication, Shared growth experience, Emotional support

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

**In-app purchases:** none


## Frequently asked questions

### Is 格致 free?

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

### Is 比特纪 free?

比特纪 is free to download, with no in-app purchases.

### Do 格致 or 比特纪 have ads?

比特纪 shows ads; 格致 does not.

### Which is updated more often, 格致 or 比特纪?

格致 ships an update monthly, and 比特纪 weekly. Most recently, 格致 was updated on October 30, 2026 and 比特纪 on October 24, 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.*