# API Signal vs API Guard

The clearest difference is iOS requirement: API Signal at 16.4 against API Guard's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. API Signal sells 2 in-app purchases, starting at $5.99 per month and API Guard sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | API Signal | API Guard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 58 MB | 41 MB |
| Requires iOS | **16.4** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Masakatsu Aida](https://appshunter.io/developer/6779135295) | [Fuat Tarik ISLAM](https://appshunter.io/developer/1884436201) |

## What reviewers say

### API Signal

[App page](https://appshunter.io/ios/app/api-signal/id6779543008)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $5.99 | per month |
| Standard Monthly | $39.99 | per month |


### API Guard

[App page](https://appshunter.io/ios/app/api-guard-octoshield/id6787552841)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is API Signal free?

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

### Is API Guard free?

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

### Do API Signal or API Guard have ads?

Neither API Signal nor API Guard 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.*