# BOC HZMBHK vs SelfSync

The clearest difference is ads: SelfSync at none against BOC HZMBHK's shown. BOC HZMBHK's advantage is update cadence (every 8 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BOC HZMBHK ships an update every 8 days, SelfSync every 3 months. The most recent releases landed on October 13, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | BOC HZMBHK | SelfSync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 3 months |
| Size | 89 MB | 52 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong, China Association of Athletics Affiliates Limited](https://appshunter.io/developer/1494259852) | [c100k](https://appshunter.io/developer/1687515684) |

## What reviewers say

### BOC HZMBHK

[App page](https://appshunter.io/ios/app/boc-hzmbhk/id6470292349)

**Features:** macOS Compatibility

**In-app purchases:** none


### SelfSync

[App page](https://appshunter.io/ios/app/selfsync/id6670619423)

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

**In-app purchases:** none


## Frequently asked questions

### Is BOC HZMBHK free?

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

### Is SelfSync free?

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

### Do BOC HZMBHK or SelfSync have ads?

BOC HZMBHK shows ads; SelfSync does not.

### Which is updated more often, BOC HZMBHK or SelfSync?

BOC HZMBHK ships an update every 8 days, and SelfSync every 3 months. Most recently, BOC HZMBHK was updated on October 13, 2026 and SelfSync on September 25, 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.*