Can I build my own custom app and make it look like part of the platform?

Yes. Use the built-in app builder to build a fully functional app. The app has its own database, its own APIs and its own code, and it can call other APIs. Votel has a database built in for apps, and you can bring your own Supabase or another external database if you prefer.

To make the app look like part of the platform, embed it in the system in an iframe, for example as a custom menu item.