No, Shogun is not free on Shopify. It offers various plans depending on the size of your store, with prices ranging from $19 to $299 per month.
Shogun is a page builder designed for Shopify stores that allows you to easily create custom webpages. It gives you access to a wide variety of tools, templates and assets that can be used to build custom pages in minutes. It also includes features such as A/B testing, SEO optimization, and shop customization.
If you're looking for a free option, Shopify offers its own free page builder, as well as several other third-party tools. These include themes from its Marketplace, plus plugins and apps from the Shopify App Store.
In summary, Shogun is not free but offers a lot of value for its higher end premium plan. If you're looking for a no-cost option to build custom pages, there are several third-party tools that can help.
I hope this helps!