# Guard vs Nullgen AI Blocker

The clearest difference is iOS requirement: Guard at 16 against Nullgen AI Blocker's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Guard sells 1 in-app purchase, starting at $19.99 per year and Nullgen AI Blocker sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Guard | Nullgen AI Blocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/nullgen-ai-blocker/id6805736567/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | — | Free with in-app purchases |
| Size | 22 MB | 17 MB |
| Requires iOS | **16** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Arctic Sentinel AB](https://appshunter.io/developer/1845723582) | [Nullgen, Inc.](https://appshunter.io/developer/6805736569) |

## What reviewers say

### Guard

[App page](https://appshunter.io/ios/app/guard-digital-security/id6753925342)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Year Subscription | $19.99 | per year |


### Nullgen AI Blocker

[App page](https://appshunter.io/ios/app/nullgen-ai-blocker/id6805736567)

This app prevents AI chatbots and websites from functioning on your iPhone or iPad. It blocks access to over 70 AI services, including popular ones like ChatGPT and Gemini, across Safari, Chrome, and other apps. A VPN configuration is used locally on the device to filter AI destinations without routing your traffic.

**Highlights:** Blocks over 70 AI services, Works on Safari, Chrome, and apps, Local VPN configuration for filtering, No off switch for continuous blocking, Parental controls for access requests, Cross-device protection with Nullgen Pro

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nullgen Family Monthly | $5.99 | per month |
| Nullgen Family Yearly | $59.99 | per year |


## Frequently asked questions

### Is Guard free?

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

### Is Nullgen AI Blocker free?

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

### Do Guard or Nullgen AI Blocker have ads?

Neither Guard nor Nullgen AI Blocker 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.*