I've been using Headway for just over a week and it's been a great experience so far. Although there are specific books and authors I would like to see, I have been able to find good alternatives. I like being able to switch between reading and audio modes. The voices vary and I don't think they're as robotic as some have written If you enjoy reading for pleasure and listening to long-version audiobooks, this is not for you. If you want to get the point, take a trial run at a book, while maybe digesting all you needed anyway, Headway is it. I would just like to see an expansion of titles; those written in native Spanish in my case. I'll be using this app often.