# SEO_optimize vs SiteAuditOS

The clearest difference is ads: SiteAuditOS at none against SEO_optimize's shown. SiteAuditOS also leads on iOS requirement (17.0 vs 26.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. SEO_optimize sells 1 one-off in-app purchase and SiteAuditOS sells 4 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | SEO_optimize | SiteAuditOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Size | 12 MB | 2 MB |
| Requires iOS | 26.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Terje Molle](https://appshunter.io/developer/1841713886) | [ARKA Systems LLC](https://appshunter.io/developer/1873596855) |

## What reviewers say

### SEO_optimize

[App page](https://appshunter.io/ios/app/seo-optimize/id6757407386)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SEO Auditor Supporter | $5.99 | one-time |


### 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 SEO_optimize free?

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

### Is SiteAuditOS free?

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

### Do SEO_optimize or SiteAuditOS have ads?

SEO_optimize shows ads; SiteAuditOS does not.

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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.*