I've tried river-of-news style readers, but it doesn't fit how I use RSS. I only subscribe to feeds when I want to read, or at least have the option to read, al

I've tried river-of-news style readers, but it doesn't fit how I use RSS. I only subscribe to feeds when I want to read, or at least have the option to read, all the posts, and I want to read the posts oldest to newest.