You can replace some of the Wix's default app pages, such as the Booking Calendar or the Plans & Pricing page, with your own customized versions.
Modify or extend the page's design and functionality however you like to suit your precise business needs. By adding code to the page and using Wix APIs, you can easily integrate with the app's page flow and access contextual app data, providing site visitors with a seamless app experience.
To implement a custom page's functionality and integrate it into the app's page flow, you need to add code to the page and use Wix APIs.
Your code has to do several things:

Watch a quick demo to see how easy it is to build you own custom page.