# Inspire@PolyU vs Preface.ai

The clearest difference is update cadence: Preface.ai at fortnightly against Inspire@PolyU's every 2 months. Inspire@PolyU's advantage is iOS requirement (12.0 vs 15.1). 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.

Inspire@PolyU ships an update every 2 months, Preface.ai fortnightly. The most recent releases landed on September 10, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Inspire@PolyU | Preface.ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 34 MB | 64 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) | [Preface Coding](https://appshunter.io/developer/1567531648) |

## What reviewers say

### Inspire@PolyU

[App page](https://appshunter.io/ios/app/inspirepolyu/id1581047033)

**Features:** macOS Compatibility

**In-app purchases:** none


### Preface.ai

[App page](https://appshunter.io/ios/app/prefaceai/id6541761017)

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

**In-app purchases:** none


## Frequently asked questions

### Is Inspire@PolyU free?

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

### Is Preface.ai free?

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

### Do Inspire@PolyU or Preface.ai have ads?

Neither Inspire@PolyU nor Preface.ai shows ads.

### Which is updated more often, Inspire@PolyU or Preface.ai?

Inspire@PolyU ships an update every 2 months, and Preface.ai fortnightly. Most recently, Inspire@PolyU was updated on September 10, 2026 and Preface.ai on September 6, 2026.

---

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