Here are two iOS ereader apps that I think you should try. Both Readmill and Marvin read ePub files and offer features that iBooks is nowhere close to rolling out.

Readmill

This app has quickly become my favorite app to read in. The design of Readmill is fantastic and they have pioneered many of the highlighting-type features that kindle and iBooks have adopted.

What really makes Readmill great is the community and sharing aspects. Basically, (if you turn on the features) it turns any book you’re reading into a book club. You don’t necessarily “follow people” (though you can), but while in a book other people’s highlights and comments pop up, just as if they were scribbled in the margins of a paper book. In Readmill you can reply to their marginalia or highlights and then others can respond to you, etc. You’ll have a full blown discussion before you know it… all centered on this shared experience of that very book you are reading. Of course, you can also ‘@’ people not reading the book to help promote the book or spur interest/discussions among your friends, but the idea of a group of people gathering around the shared reading of a book is fantastic. I really like the notion of discovering people to follow based on their ideas and observations alone.

I have always read business books in paper. I need to scribble and make notes in non-fiction books. But I recently gave Readmill a go for a business book and can honestly say I was better for it. I stumbled on a few people, in the Readmill community, who had read it before me and made some fantastic connections inside that book. These were ideas that  I may never have come up with on my own. It was a cool experience.

Marvin

Marvin is a fun app to read in as well, but for totally different reasons. You do have amazing controls over the color, brightness, etc. and the design is solid. Plus, they have some nifty features to help folks with dyslexia or near-blindness. Marvin also allows one-click downloads from free eBook sites, Dropbox, Readmill, ODPS, and Calibre integration.

But my favorite feature of Marvin is the Deep View. Once you click ‘OK’ the Marvin app will quickly read your whole book in about a minute. It will then offer you a list of every name in the book with external links and how the names appear to be related in the book. It will also offer you a summary of the book (free Cliffs Notes!) if you’d like one. It will also compile a list of articles about that book, article about the author, and other internet content related to the book. It’s like setting your own private wiki-pedia for the book you happen to be reading.

Once you integrate that with IMDB, etc. it gets to be very very fun. I’ve found I enjoy reading older books in this app as I’m always amazed at how many author “from the days of yore” knew each other, hung out together, berated each other, or mentioned each other in their books and reviews.

For every Brat Pack in Hollywood, there were at least 10 groups of authors paying attention to each other.

While neither Readmill or Marvin have direct access to a robust bookstore like iBooks or kindle, these two ereader apps are worth the extra two clicks to getting an ePub side loaded to read. Check them out. I’d love to know what you think.