Moon+ Reader Pro

★★★★★ Love this app! It's my favorite epub reader. Now that my book collection is growing, its becoming cramped because the novels I read have multiple volumes in a series. One thing I haven't seen is a way to sort the books in the library by series. More specifically, each series is put in mini-folders like the way the "Groups" feature works and displayed that way in the "All Books" section. I could do it manually by using the groups feature, but it would be nice as an automatic sort option.

★★★★★ Easily the best ereader app for Android. The user has granular control over everything, including how their bookshelf looks and which fonts are displayed when reading. There are different background images, so you can make your digital books look like they were written on vellum, parchment, or a nontraditional material. Overall the ability to tinker provided by this app is unmatched by the likes of Kindle, Kobo, and Barnes and Noble.

★★★★★ I'd give 5 stars if each book file remembered whether it is horizontal or vertical separately. It is annoying when I have to switch between epub and PDF files.

★★☆☆☆ I was very happy with the app, but sadly since few weeks the page order of my cbz files are messed up. For example in a book suddenly on Page 114 the order starts to get messed up. On a different reader, the order is alright. But in Moon+ Reader, the order is messed up for about 20 pages, then gets alright again. Please fix this problem.

★★☆☆☆ Can't download Pro version after transition to a new PHONE, please fix. The app was great to use, hope for the quick response.

★★☆☆☆ With a recent update, the path of my synced books and reading position in Google Drive was automatically shifted to the root rather than the path I specified. It didn't move my synced books & position over, it simply created a new directory in Drive. The option to specify a different path is greyed out. EDIT: What a dreadful response from the developer - not willing to fix what is clearly an issue. I don't want Moon Reader to define my folder hierarchies in Drive!