# Knowio vs Site Guardian

The clearest difference is update cadence: Knowio at every 2 months against Site Guardian's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Knowio ships an update every 2 months, Site Guardian every 8 months. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Knowio | Site Guardian |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Size | 48 MB | 48 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Inniovate Ltd](https://appshunter.io/developer/1725974365) | [Site Guardian Group](https://appshunter.io/developer/1854741454) |

## What reviewers say

### Knowio

[App page](https://appshunter.io/ios/app/knowio/id6476141189)

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

**In-app purchases:** none


### Site Guardian

[App page](https://appshunter.io/ios/app/site-guardian/id6755597705)

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

**In-app purchases:** none


## Frequently asked questions

### Is Knowio free?

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

### Is Site Guardian free?

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

### Do Knowio or Site Guardian have ads?

Neither Knowio nor Site Guardian shows ads.

### Which is updated more often, Knowio or Site Guardian?

Knowio ships an update every 2 months, and Site Guardian every 8 months. Most recently, Knowio was updated on October 15, 2026 and Site Guardian on October 2, 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.*