To create a freestyle Fiori app on CAPM BTP, use Business Application Studio (BAS) and SAP Fiori development tools. In BAS, select a CAPM project, add SAP Fiori elements, and design a user interface using SAP UI5. Test and deploy the app to the BTP environment using BAS and CAPM.

Here's a high-level overview of the steps to create a freestyle Fiori app on CAPM BTP using Business Application Studio (BAS):

Set up a project: Create a new project in BAS and select the Cloud Application Programming Model (CAPM) project type.

Add SAP Fiori elements: Add the SAP Fiori elements to your project, such as the SAP Fiori launchpad, UI5 libraries, and OData services.

Design the UI: Design the user interface of your Fiori app using SAP UI5. You can use the SAP Fiori Elements UI design framework to create an intuitive and responsive user interface.

Connect to data: Connect your app to data sources using OData services. You can use existing OData services or create your own.

Test the app: Test the app locally in the BAS development environment to ensure that it's working as expected.

Deploy the app: Deploy the app to the BTP environment using the BAS and CAPM tools. You can use the Cloud Foundry command-line interface (CLI) or the SAP Cloud Platform cockpit to deploy the app. Launch the app:

Launch the app from the SAP Fiori launchpad in the BTP environment to test it in a production-like environment