# PolyU Library vs ColorWordBlitz4U

The clearest difference is iOS requirement: PolyU Library at 15.0 against ColorWordBlitz4U's 26.2. 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.

## The numbers

| Metric | PolyU Library | ColorWordBlitz4U |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 35 MB | 1 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) | [Alexandre agopin](https://appshunter.io/developer/1854531548) |

## What reviewers say

### PolyU Library

[App page](https://appshunter.io/ios/app/polyu-library/id6450161237)

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

**In-app purchases:** none


### ColorWordBlitz4U

[App page](https://appshunter.io/ios/app/colorwordblitz4u/id6758688240)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PolyU Library free?

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

### Is ColorWordBlitz4U free?

ColorWordBlitz4U is free to download, with no in-app purchases.

### Do PolyU Library or ColorWordBlitz4U have ads?

Neither PolyU Library nor ColorWordBlitz4U shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*