# HKFSD vs Preface.ai

The clearest difference is update cadence: Preface.ai at fortnightly against HKFSD's every 2 months. HKFSD's advantage is iOS requirement (12.4 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.

HKFSD ships an update every 2 months, Preface.ai fortnightly. The most recent releases landed on September 9, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | HKFSD | Preface.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hkfsd/id6445880469/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 88 MB | 64 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Fire Services Department](https://appshunter.io/developer/860477412) | [Preface Coding](https://appshunter.io/developer/1567531648) |

## What reviewers say

### HKFSD

[App page](https://appshunter.io/ios/app/hkfsd/id6445880469)

This app provides essential information about fire safety and ambulance services. It aims to enhance public understanding of the department's work and services. The application is regularly updated to meet community needs.

**Highlights:** Fire safety information, Ambulance service details, Departmental work overview, Community needs updates, Ongoing enhancements

**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 HKFSD free?

HKFSD 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 HKFSD or Preface.ai have ads?

Neither HKFSD nor Preface.ai shows ads.

### Which is updated more often, HKFSD or Preface.ai?

HKFSD ships an update every 2 months, and Preface.ai fortnightly. Most recently, HKFSD was updated on September 9, 2026 and Preface.ai on September 6, 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.*