You can get the first volume for free. Teen angst and fetish suits sold separately.
I feel like Yoshiyuki Sadamoto's Neon Genesis Evangelion is the Catcher in the Rye of manga/anime titles. Whoa, hold up there--I'm not saying in terms of quality, that's a wholly debatable can of worms. I'm talking about how, in the years since its debut, the series which is ostensibly about giant mecha and apocalyptic tension seems to grab hold of the imagination of each subsequent set of new readers, really picking up for them what it means to be suffer through the ennui and confusion that comes with being a teenager. Maybe it's because the series is embedded with so many easy-to-pick-up-but-still-clever religious and philosophical allusions that it feels like something that they can at once relate to and feel smart reading.
So yeah, you can get the series in chapters via the Viz Manga App for the iPhone and iPad, with the first chapter available for free now and subsequent chapters available for 0.99 each. I'm assuming by "chapter" they're referring to the 30-odd page chunks (I'll be checking this out tonight on my own iPad). There's no mention as to any kind of modification to the text to optimize it for i-devices (i.e. panel transitions and animations, etc.).
For those of you not in the know, here's the official synopsis:
NEON GENESIS EVANGELION (rated ‘T+’ for Older Teens), is series co-creator Yoshiyuki Sadamoto's personal interpretation of the Evangelion characters and story is sure to intrigue new and old fans alike. In 2015, the "Angels" have returned, and Shinji Ikari, a fourteen year-old child of the new Earth, is forced by his father Gendo – commander of the secret organization NERV – to pilot the monstrous biomechanical weapon called "Evangelion" to match the Angels' fearsome power...
Neon Genesis Evangelion will launch a new chapter weekly via the VIZ Manga App and through VIZManga.com.