# uLock@HKU vs PolyU Halls

The clearest difference is update cadence: uLock@HKU at every 6 weeks against PolyU Halls's every 5 months. PolyU Halls's advantage is iOS requirement (15.6 vs 17.6). 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.

uLock@HKU ships an update every 6 weeks, PolyU Halls every 5 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | uLock@HKU | PolyU Halls |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Size | 14 MB | 14 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The University of Hong Kong](https://appshunter.io/developer/451384643) | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) |

## What reviewers say

### uLock@HKU

[App page](https://appshunter.io/ios/app/ulockhku/id1477451541)

**In-app purchases:** none


### PolyU Halls

[App page](https://appshunter.io/ios/app/polyu-halls/id6503722401)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is uLock@HKU free?

uLock@HKU is free to download, with no in-app purchases.

### Is PolyU Halls free?

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

### Do uLock@HKU or PolyU Halls have ads?

Neither uLock@HKU nor PolyU Halls shows ads.

### Which is updated more often, uLock@HKU or PolyU Halls?

uLock@HKU ships an update every 6 weeks, and PolyU Halls every 5 months. Most recently, uLock@HKU was updated on October 24, 2026 and PolyU Halls on October 27, 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.*