As the joke goes, there are many readers out there but this one is mine.
What I look for in ebook reader software – 1. an easy to use interface when I’m actually reading the text. It absolutely must let me control the reading experience as far as font and color. My eyes aren’t as good as they used to be and I often read at night so I need to be able to pick the font and I love to read text reversed colors, especially at night (so white text on black background). 2. A method/style to cataloging books that makes sense to be and isn’t a pain in the ass to use on the device as well as on the mothership (my laptop).
Marvin is great at 1 and moderately sucky at 2 so I keep using it because I lot of what I download on the fly is from AO3 which has oh so easy to use download links that just drop it right into the app. I originally would bookmark links and then load them in with Calibre but drifted away from that over time which means my Calibre library doesn’t have everything (annoying).
Anyway, if you are a voracious AO3 reader like myself and have an ipad/iphone I recommend Marvin as a reader app. The default theme is decent, you can build out your own color scheme and the interface really works as a book reader.
It has features I don’t use much (for fic reading) like bookmarks, annotations, defining words etc. It really is a feature rich reader that I use 10% of the functionality.
Marvin lets you grab files from dropbox, calibre, web, etc so it makes it super easy to suck stuff into your ios device. Promise!