Try "Marvin" iPad App. It is the best that I have found and I have tested a bunch of different "readers" over the past couple of years. It lets you change the background color as well as the text color. I read in a lot with all lights off and I set Marvin to a black background with orange text. Very easy on my eyes, and if it still seems too bright after a few chapters, I can tap the screen and slide my finger up or down to adjust the brightness. Very easy to customize. I used to use Stanza but it has become Abandonware now and it was not as easy to set up as Marvin is. Marvin's developer was very responsive and helpful to my questions about the App. Let us know what you think !When I read a book in pdf the ipad is too bright which makes reading nearly impossible.
Is there any app that simulates or become less bright the ipad?
Thanks