Oyster has published an infographic on their blog showing iOS vs Android reading habits.
There are a few interesting observations. Android readers are fans of J.R.R. Tolkein while iOS readers favor C.S. Lewis. iOS readers are often reading at noon and midnight while 8:00 PM seems to be the favored time for Android. iOS users read slower than Android, and for shorter periods of time.
Check out the rest of the infographic and feel free to make your own observations in the comments.