Is the implementation of a Personal Data Reporting API required for a custom UI app developed using Forge?

I have developed a custom UI application using Forge and it stores users’ personal data such as accountId and displayName in the database, and to publish your app on a marketplace, it’s important to determine whether I need to implement a Personal Data Reporting API. To clarify, do custom UI apps also require the implementation of the Personal Data Reporting API? If the answer is yes, could you provide an example of how to do this?