Currently Databricks has Lakehouse Apps in private preview, where you can build low-/no-code apps upon your data directly in Databricks: https://www.databricks.com/company/newsroom/press-releases/databricks-announces-lakehouse-apps-and-e...
I don't know if databricks will offers its own app builder, but you can use and administrate tools like Retool or Gradio directly inside of databricks.

I hope that helps.