Boom Studios have now released their own stand alone iPhone/iPad app.
This is based on the same template as the Marvel app which is created by Comixology. Marvel have only just started releasing different unique content, so I expect Boom! to do the same.
After their success with both the Comics App and the Marvel Comics App, Comixology have now created a Boom! Comics App. So you can read Boom! titles away from the hoi polloi of other publishers.
It launches with fifty titles and will soon include the entire Boom back catalogue and all the new titles as they are published.
One interesting twist is that every title offered for sale will give away the first half of the first issue of the comic for free.