# BlueTrails vs Call Shield

The clearest difference is in-app purchases: BlueTrails at none against Call Shield's 1. BlueTrails also leads on iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Call Shield sells 1 in-app purchase, starting at $0.99 per month. BlueTrails asks for nothing beyond the download.

## The numbers

| Metric | BlueTrails | Call Shield |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 108 MB | 17 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tecnosoft s.r.l.](https://appshunter.io/developer/1575534717) | [Orazio Dell'Osa](https://appshunter.io/developer/1886840582) |

## What reviewers say

### BlueTrails

[App page](https://appshunter.io/ios/app/bluetrails/id1623777438)

**Features:** macOS Compatibility

**In-app purchases:** none


### Call Shield

[App page](https://appshunter.io/ios/app/call-shield-spam-blocker/id6767889573)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Call Shield Pro Monthly | $0.99 | per month |


## Frequently asked questions

### Is BlueTrails free?

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

### Is Call Shield free?

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

### Do BlueTrails or Call Shield have ads?

Neither BlueTrails nor Call Shield shows ads.

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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.*