For Apps in Studio Web, please find cheatsheet app that you can use to bind Data Table, Entity App variable to Edit Grid, Data Table and Custom List controls
Some people mentioned its hard, so attached cheatsheet app for keeping as reference
Apps in Studio Web uses apps intrface but for backend uses Studio Web workflows
Much powerful as you dont need to call start process rule but natively use all activities
much more powerful.
Also it is defacto version for IS activities native integration