Using Markor as a TiddlyWiki app

If you create a link to your hosted TW file (which can be hosted on your own device, tiddlyhost, tailscale connection, etc.) in the Android app “Markor”, then when you preview your page and click on the link, your page is loaded in a special single-page viewer provided by Firefox. You can save from this page back to your host.

The advantage is that you don’t have to wade through the dozens of tabs that the full Firefox gives you, and you can make your own personal menu back in Markor.

Couple this with the browser storage plugins (the official one and the Btheado opinionated one) and you have something very close to a full TW application.

Do you mean “in Markor itself” here, or rather having a Markdown file (since Markor is primarily a Markdown editor, albeit not only) that contains a link to a remote single HTML file TiddlyWiki hosted on a remote server?

You have a link to your TW file in markor. When you click on the link, markor displays it in it’s own special firefox wrapper. Instead of using webview, it’s using a single-tab FF for viewing. In the Android multi-app view, it shows Markor as the running app, not FF.