SizeChina vs PolyU Library
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SizeChina
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The SizeChina database is the first-ever 3D digital database of Chinese head and face shapes. Accurate facial dimensions extracted from the SizeChina database can be accessed from this app, which helps students and professionals alike in designing Chinese-fit consumer products such as glasses, helmets and face masks.
PolyU Library
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PolyU Library Mobile App gives you a whole new experience in using library services and facilities: - Search and locate book collections and facilities with Augmented Reality (AR) indoor navigation - Find the availability of computers, group rooms, studios, seats, and study space in real time - Make reservation for library facilities, manage iBooking records and onsite check in/out the reserved rooms - View personal records of requested items and loans, and receive alert messages for borrowing and returning records, due date reminders and pick-up notices for requested items - Check-out books via NFC - Make advanced reservation for borrowing notebook computer - Listen to the audio guide of students sharing sessions and learning experiences when visiting the Outstanding Work by Students Showcase in the Library
Screenshots
Verdict
The clearest difference is update cadence: PolyU Library at every 3 months against SizeChina's every 60 months. SizeChina's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SizeChina ships an update every 60 months, PolyU Library every 3 months. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.
| Parameter | SizeChina | PolyU Library |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 60 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 23 MB | 35 MB |
| Age rating | 4+ | 17+ |
| Developer | Apps Resource Centre, Hong Kong Baptist University | The Hong Kong Polytechnic University |
In-app purchases
SizeChina
No in-app purchases
PolyU Library
No in-app purchases
Questions
Is SizeChina free?
Is PolyU Library free?
Do SizeChina or PolyU Library have ads?
Which is updated more often, SizeChina or PolyU Library?
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