# HC vs PrefixBlock

The clearest difference is in-app purchases: HC at none against PrefixBlock's 3. HC also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). PrefixBlock's advantage is update cadence (every 3 days vs every 2 weeks). On price and ads there is nothing between them.

Both are free to download. PrefixBlock sells 3 in-app purchases, starting at $0.99 per month. HC asks for nothing beyond the download.

HC ships an update every 2 weeks, PrefixBlock every 3 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | HC | PrefixBlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 32 MB | 4 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HC Group](https://appshunter.io/developer/1731394386) | [Phung Doanh](https://appshunter.io/developer/965062916) |

## What reviewers say

### HC

[App page](https://appshunter.io/ios/app/hc-smart-dat/id6737012166)

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

**In-app purchases:** none


### PrefixBlock

[App page](https://appshunter.io/ios/app/prefixblock-spam-call-filter/id6800204952)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chặn đầu số pro tháng | $0.99 | per month |
| Chặn đầu số pro năm | $4.99 | per year |
| Chặn đầu số trọn đời | $9.99 | one-time |


## Frequently asked questions

### Is HC free?

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

### Is PrefixBlock free?

PrefixBlock is free to download, with in-app purchases available.

### Do HC or PrefixBlock have ads?

Neither HC nor PrefixBlock shows ads.

### Which is updated more often, HC or PrefixBlock?

HC ships an update every 2 weeks, and PrefixBlock every 3 days. Most recently, HC was updated on October 11, 2026 and PrefixBlock on October 8, 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.*