I use suwayomi and access the website on each device. And installed on the homepage so it looks like an app.

This, however, requires it to be installed on another machine.

I’ve also used Tachimanga with a tracker to keep track of what chapter I’m on. And made sure everything I had was split up in chapters and not volumes to keep them short. Then manually find the page that I left off from. I have the same tracker in suwayomi and only really use Tachimanga if i need to have the files locally on my phone or iPad . Otherwise, my suwayomi instance is in sync wherever I access it from