# CallDam vs PrefixBlock

The clearest difference is in-app purchases: CallDam at none against PrefixBlock's 3. On price and iOS requirement there is nothing between them.

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

## The numbers

| Metric | CallDam | PrefixBlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calldam/id6768055786/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 days |
| Monetization | Free | — |
| Size | 9 MB | 4 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Valentina Prossapchuk](https://appshunter.io/developer/1895013467) | [Phung Doanh](https://appshunter.io/developer/965062916) |

## What reviewers say

### CallDam

[App page](https://appshunter.io/ios/app/calldam/id6768055786)

Block unwanted calls efficiently by creating rules based on phone number prefixes. Protect thousands of numbers at once and manage your blocking lists directly from the iPhone share sheet. Your privacy is maintained as all rules stay on your device with no tracking or account required.

**Highlights:** Block calls by phone-number prefix, Protect large ranges of numbers, Direct blocking from iPhone share sheet, Add exact-number exceptions, Import and export local backups, Apply block list via iOS Call Blocking

**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 CallDam free?

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

### Is PrefixBlock free?

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

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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.*