# Sun Ferry vs HKSOS

The clearest difference is ads: HKSOS at none against Sun Ferry's shown. HKSOS also leads on monetization model (free vs ad-supported) and update cadence (every 3 weeks vs every 2 months). Sun Ferry's advantage is iOS requirement (12.0 vs 14.0). On price, 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.

Sun Ferry ships an update every 2 months, HKSOS every 3 weeks. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Sun Ferry | HKSOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hksos/id1671480993/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 17.6% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 43 MB | 192 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sun Ferry Services Company Limited](https://appshunter.io/developer/783558402) | [Hong Kong Police Force](https://appshunter.io/developer/535359322) |

## What reviewers say

### Sun Ferry

[App page](https://appshunter.io/ios/app/sun-ferry/id783558399)

Plan your ferry trips with real-time seating availability and purchase monthly tickets online. Stay updated on sailing schedules and pier information through an integrated calendar.

**Highlights:** Instant seating status, Online monthly ticket purchase, Up-to-date sailing news, Pier information, Calendar for updates

**Features:** macOS Compatibility

**In-app purchases:** none


### HKSOS

[App page](https://appshunter.io/ios/app/hksos/id1671480993)

This app provides a direct link to emergency services, generating a unique SOS signal with precise location data. It aims to expedite rescue response times in critical outdoor situations.

**Highlights:** Direct link to 999 Call Centre, Generates unique SOS signal, Provides precise location data, Expedites rescue response, Designed for outdoor safety

**In-app purchases:** none


## Frequently asked questions

### Is Sun Ferry free?

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

### Is HKSOS free?

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

### Do Sun Ferry or HKSOS have ads?

Sun Ferry shows ads; HKSOS does not.

### Which is updated more often, Sun Ferry or HKSOS?

Sun Ferry ships an update every 2 months, and HKSOS every 3 weeks. Most recently, Sun Ferry was updated on October 18, 2026 and HKSOS on October 12, 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.*