# 比特纪 vs 次元箱

The clearest difference is in-app purchases: 比特纪 at none against 次元箱's 7. 次元箱's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. 次元箱 sells 7 one-off in-app purchases. 比特纪 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. Both last shipped on November 12, 2026.

## The numbers

| Metric | 比特纪 | 次元箱 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ai/id6657983900/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | Ad-supported | — |
| Size | 326 MB | 105 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Shanghai Bipo Information Technology Co., Limited](https://appshunter.io/developer/1784419827) | [Beijing DimensionBox Technology Co., Ltd.](https://appshunter.io/developer/1852223066) |

## What reviewers say

### 比特纪

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

An AI companion that chats with you, helps you record your life, and connects you with like-minded individuals. It offers interactive features for companionship, memory management, and social interaction within topic-based communities.

**Highlights:** AI chat companion with long memory, AI character customization and care, Daily reminders and random draws, Interactive stress relief features, Memory management and life logging, AI-generated 'memory fragments' and 'time postcards', Topic-based social channels and matching

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

**In-app purchases:** none


### 次元箱

[App page](https://appshunter.io/ios/app/oc/id6755145284)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 电池x60 | $0.99 | one-time |
| 次元金卡 | $3.99 | one-time |
| 电池x300 | $3.99 | one-time |
| 角色槽位 - 首购优惠 | $6.99 | one-time |
| 电池x680 | $9.99 | one-time |
| 角色槽位 | $14.99 | one-time |
| 电池x1280 | $17.99 | one-time |


## Frequently asked questions

### Is 比特纪 free?

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

### Is 次元箱 free?

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

### Do 比特纪 or 次元箱 have ads?

比特纪 shows ads; 次元箱 does not.

### Which is updated more often, 比特纪 or 次元箱?

比特纪 ships an update weekly, and 次元箱 weekly. Most recently, 比特纪 was updated on November 12, 2026 and 次元箱 on November 12, 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.*