If you add Kobo support and ship the Android app, you've got a premium member for life in me! Currently, I use KoboCloud to sync cloud drive (Box, Google Drive

If you add Kobo support and ship the Android app, you've got a premium member for life in me! Currently, I use KoboCloud to sync cloud drive (Box, Google Drive, et al.) folders to my readers, one folder for each family member. I use browser extensions to create epubs for websites on the fly and save them to the cloud drives, but can't find a great-looking solution for mobile (Android in particular). Many sites I visit like HN comment sections just don't reformat well and it looks like you have a wonderful solution implemented for that aspect.