Comparison

窗安無事 WIN SAFE vs 世紀21樓盤

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

窗安無事 WIN SAFE

Features

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To facilitate property owners to appoint a Qualified Person (QP) for Mandatory Windows Inspection Scheme (MWIS), Buildings Department (BD) launched this mobile application “WIN SAFE” connecting property owners/QP/BD for MWIS in an efficient manner, as a result, facilitating property owners’ early compliance of MWIS notices as well as enhancing building safety. Functions include: - - Searching QPs that meets individual owner’s needs - Rating by owners on the overall performance of the appointed QPs - Chatroom available for owners and QPs, which enables photos, files and voice recording attachments - Application for extension of time - Handling of enquiries - Collection of cost data from property owners and QPs for statistic and public’s reference

About

世紀21樓盤

Features

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C21的樓盤廣告，最新世紀21地產代理合作平台！地產代理必須的工具！

Screenshots

窗安無事 WIN SAFE4 screens

世紀21樓盤4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences

窗安無事 WIN SAFE versus 世紀21樓盤: the parameters behind the verdict, then further details
Parameter	窗安無事 WIN SAFE	世紀21樓盤
Price	Free	Free
Update frequency	Every 2 months — better	Every 3 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0	11.0 — better
Further details — not scored
Size	69 MB	18 MB
Age rating	17+	4+
Developer	Buildings Department, HKSARG	Century 21 Hong Kong Limited

In-app purchases

None

窗安無事 WIN SAFE

No in-app purchases

None

世紀21樓盤

No in-app purchases

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.