# Call Blocker vs Volkano Audio

The clearest difference is in-app purchases: Volkano Audio at none against Call Blocker's 10. Volkano Audio also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.6). Call Blocker's advantage is update cadence (monthly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Call Blocker sells 10 in-app purchases, starting at $4.99 per month. Volkano Audio asks for nothing beyond the download.

Call Blocker ships an update monthly, Volkano Audio every 2 months. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Call Blocker | Volkano Audio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.2K ratings)](https://appshunter.io/ios/app/call-blocker/id1180310843/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 78.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 72 MB | 79 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [UnknownPhone.com](https://appshunter.io/developer/1180310842) | [SMD Technologies Pty LTD](https://appshunter.io/developer/1455444362) |

## What reviewers say

### Call Blocker

[App page](https://appshunter.io/ios/app/call-blocker/id1180310843)

Block unwanted calls, identify suspicious numbers, and report spam. Access a large community database to avoid phone scams and extra charges. Protect yourself from telemarketers and unknown callers.

**Highlights:** Block any phone number, Identify commercial calls, Report suspicious numbers, Avoid common scams, Access community database, Automatic dangerous number blocking

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Call Blocker 1-Month Shield | $4.99 | per month |
| One month subscription | $6.99 | per month |
| Call Blocker: 3M Shield | $9.99 | per 3 months |
| Call Blocker Premium - 3 Months | $9.99 | per 3 months |
| Call Blocker Premium - 3 Months | $9.99 | per 3 months |
| Three months subscription | $14.99 | per 3 months |
| Call Blocker Premium - 3 Months | $14.99 | per 3 months |
| Call Blocker Premium - 1 Year | $22.99 | per year |
| Call Blocker Premium - 1 Year | $22.99 | per year |
| Call Blocker: 1 Year | $22.99 | per year |

**What reviewers like**

- 🚀 Effective call blocker
- 👍 Easy to use
- 🔒 Blocks spam and scam calls
- 💡 Useful caller ID and lookup features

**What reviewers complain about**

- 🐛 Inconsistent performance, some calls still get through
- 🔍 Incomplete database of known scammers
- 💰 Paid version required for full functionality
- 📱 Doesn't integrate well with phone's built-in blocking

**Reported bugs**

- Database update errors
- Inability to block certain numbers

**Requested features**

- Automatic database updates
- Block calls from unknown/private numbers
- Integration with phone's native call blocking


### Volkano Audio

[App page](https://appshunter.io/ios/app/volkano-audio/id6502693307)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Call Blocker free?

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

### Is Volkano Audio free?

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

### Do Call Blocker or Volkano Audio have ads?

Call Blocker shows ads; Volkano Audio does not.

### Which is updated more often, Call Blocker or Volkano Audio?

Call Blocker ships an update monthly, and Volkano Audio every 2 months. Most recently, Call Blocker was updated on November 6, 2026 and Volkano Audio on October 27, 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.*