# POLY vs Mobile@HKUL (HKU Libraries)

POLY and Mobile@HKUL (HKU Libraries) 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.

POLY ships an update every 2 months, Mobile@HKUL (HKU Libraries) every 4 months. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | POLY | Mobile@HKUL (HKU Libraries) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 54 MB | 69 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) | [HKU Libraries](https://appshunter.io/developer/1513119976) |

## What reviewers say

### POLY

[App page](https://appshunter.io/ios/app/polyuway/id1437595452)

**In-app purchases:** none


### Mobile@HKUL (HKU Libraries)

[App page](https://appshunter.io/ios/app/mobilehkul-hku-libraries/id1513119977)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is POLY free?

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

### Is Mobile@HKUL (HKU Libraries) free?

Mobile@HKUL (HKU Libraries) is free to download, with no in-app purchases.

### Do POLY or Mobile@HKUL (HKU Libraries) have ads?

Neither POLY nor Mobile@HKUL (HKU Libraries) shows ads.

### Which is updated more often, POLY or Mobile@HKUL (HKU Libraries)?

POLY ships an update every 2 months, and Mobile@HKUL (HKU Libraries) every 4 months. Most recently, POLY was updated on November 6, 2026 and Mobile@HKUL (HKU Libraries) 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.*