# 窗安無事 WIN SAFE vs 世紀21樓盤

窗安無事 WIN SAFE and 世紀21樓盤 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

窗安無事 WIN SAFE ships an update every 2 months, 世紀21樓盤 every 3 months. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 窗安無事 WIN SAFE | 世紀21樓盤 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 69 MB | 18 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Buildings Department, HKSARG](https://appshunter.io/developer/888159754) | [Century 21 Hong Kong Limited](https://appshunter.io/developer/405907603) |

## What reviewers say

### 窗安無事 WIN SAFE

[App page](https://appshunter.io/ios/app/win-safe/id1616494423)

**Features:** macOS Compatibility

**In-app purchases:** none


### 世紀21樓盤

[App page](https://appshunter.io/ios/app/21/id1671702436)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 窗安無事 WIN SAFE free?

窗安無事 WIN SAFE is free to download, with no in-app purchases.

### Is 世紀21樓盤 free?

世紀21樓盤 is free to download, with no in-app purchases.

### Do 窗安無事 WIN SAFE or 世紀21樓盤 have ads?

Neither 窗安無事 WIN SAFE nor 世紀21樓盤 shows ads.

### Which is updated more often, 窗安無事 WIN SAFE or 世紀21樓盤?

窗安無事 WIN SAFE ships an update every 2 months, and 世紀21樓盤 every 3 months. Most recently, 窗安無事 WIN SAFE was updated on September 30, 2026 and 世紀21樓盤 on October 4, 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.*