I have been using this combined with Fluent Reader Lite for Android and a self-hosted FreshRSS-server to sync my feeds. Just recently found a workflow that works well for me: I will browse my feeds on my phone once in a while (very productive bathroom breaks…), showing only unread stories. I star any story I want to read later, mark the rest as read. With Fluent Reader on Linux set to only show starred, and I can then pick and choose whatever story I want to read from there on a bigger screen. Whenever I go some days without checking, I will just mark all spammy news outlets as read without checking the 400 unread stories.