This app was mentioned in 2 comments, with an average of 2.00 upvotes
I've been using this (fanfiction reader google play) for years just for straight downloads, but ever since the ffbot I've started just hitting the epub download button and sticking them in my google docs, then letting google read them to me as I drive/bike/etc... I don't really use the communities on FF, however this looks like a snappy app so I'll give it a run. Thanks for the rec, I'm always hunting for a "better" app/way to do something.
I used to use Fanfiction Reader Premium . It's has good features like filtering the fics in their respective fandom and ability to backup/import fics