Yep, it's a hosted service - you can publish your app with one click! Self-hosting requires an on-site Anvil installation. This is because many of the things we do to make things easy (eg returning live database rows from server to client in a function call, then manipulating them directly there) require server-side report.

We think it's worth it - for example, it saves you building a new REST API each time you blow your nose - but the trade-off is that we can't just provide a "download as Flask app" button.

If you want to run server code on your own machine, though, check out the Uplink. It's a library you 'pip install', connect to your app, and then you can drive your code from the web. Here's an example driving a Raspberry Pi: https://anvil.works/blog/uplink