Currently I’m using booky mcbookface but the app is really lacking and the scrolling is not smooth.
Edit: I came across Lithium and Readera which both don’t seem to collect much information compared to other apps. Not sure if they’re open source though.
@MakingWork I haven’t tried many, but Book’s Story (from F-droid) is doing a great job in my e-ink phone
Looks great, will try it out!