# HKU B Active vs TrailWatch Event

The clearest difference is update cadence: TrailWatch Event at every 2 months against HKU B Active's every 7 months. 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.

HKU B Active ships an update every 7 months, TrailWatch Event every 2 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | HKU B Active | TrailWatch Event |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Size | 46 MB | 54 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mobile.Cards Lab](https://appshunter.io/developer/1534519898) | [Parks and Trails Limited](https://appshunter.io/developer/1747467875) |

## What reviewers say

### HKU B Active

[App page](https://appshunter.io/ios/app/hku-b-active/id1574286908)

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

**In-app purchases:** none


### TrailWatch Event

[App page](https://appshunter.io/ios/app/trailwatch-event/id6448609887)

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

**In-app purchases:** none


## Frequently asked questions

### Is HKU B Active free?

HKU B Active is free to download, with no in-app purchases.

### Is TrailWatch Event free?

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

### Do HKU B Active or TrailWatch Event have ads?

Neither HKU B Active nor TrailWatch Event shows ads.

### Which is updated more often, HKU B Active or TrailWatch Event?

HKU B Active ships an update every 7 months, and TrailWatch Event every 2 months. Most recently, HKU B Active was updated on November 7, 2026 and TrailWatch Event on November 7, 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.*