# CASI Audit Tool vs SiteAuditOS

The clearest difference is in-app purchases: CASI Audit Tool at none against SiteAuditOS's 4. CASI Audit Tool also leads on iOS requirement (13.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. SiteAuditOS sells 4 in-app purchases, starting at $19.99 per month. CASI Audit Tool asks for nothing beyond the download.

## The numbers

| Metric | CASI Audit Tool | SiteAuditOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 38 MB | 2 MB |
| Requires iOS | **13.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [everysite](https://appshunter.io/developer/643308653) | [ARKA Systems LLC](https://appshunter.io/developer/1873596855) |

## What reviewers say

### CASI Audit Tool

[App page](https://appshunter.io/ios/app/casi-audit-tool/id643308650)

**Features:** macOS Compatibility

**In-app purchases:** none


### SiteAuditOS

[App page](https://appshunter.io/ios/app/siteauditos/id6759220035)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $19.99 | per month |
| Agency | $39.99 | per month |
| Pro (Annual) | $149.99 | per year |
| Agency (Annual) | $299.99 | per year |


## Frequently asked questions

### Is CASI Audit Tool free?

CASI Audit Tool is free to download, with no in-app purchases.

### Is SiteAuditOS free?

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

### Do CASI Audit Tool or SiteAuditOS have ads?

Neither CASI Audit Tool nor SiteAuditOS 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.*