# 城市特工组 vs BI4Sight

The clearest difference is update cadence: 城市特工组 at fortnightly against BI4Sight's every 5 weeks. BI4Sight's advantage is iOS requirement (12.0 vs 15). 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.

城市特工组 ships an update fortnightly, BI4Sight every 5 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 城市特工组 | BI4Sight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Size | 8 MB | 47 MB |
| Requires iOS | 15 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Dosn Media Co., Ltd.](https://appshunter.io/developer/1116469901) | [WELL PROFESSIONAL TECHNOLOGY LIMITED](https://appshunter.io/developer/1770675323) |

## What reviewers say

### 城市特工组

[App page](https://appshunter.io/ios/app/id1465044144)

**Features:** macOS Compatibility

**In-app purchases:** none


### BI4Sight

[App page](https://appshunter.io/ios/app/bi4sight/id6630375823)

**In-app purchases:** none


## Frequently asked questions

### Is 城市特工组 free?

城市特工组 is free to download, with no in-app purchases.

### Is BI4Sight free?

BI4Sight is free to download, with no in-app purchases.

### Do 城市特工组 or BI4Sight have ads?

Neither 城市特工组 nor BI4Sight shows ads.

### Which is updated more often, 城市特工组 or BI4Sight?

城市特工组 ships an update fortnightly, and BI4Sight every 5 weeks. Most recently, 城市特工组 was updated on November 6, 2026 and BI4Sight on November 8, 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.*