Tangram for Android

I've been happily using Tangram in my Linux laptop: https://github.com/sonnyp/Tangram

Tangram is basically a "browser" that turns web pages into apps. It works very well with websites where I want to stay logged in for long periods of time (like lemmy or mastodon).

Does anyone know and can recommend a similar capability in Android? I would prefer something in FDroid when possible.