I grabbed this since it was only 99cents and I read all my comics on my iPhone these days, ComicZeal being my regular reader. Figured this was worth a shot for the price but its pretty much a dollar wasted if you currently have any other reader installed as its low on features, low on interface, and only supports cbz by default and it basically just expands it as a .zip file so the packed .jpg images can be viewed one at a time.
I know cbz can easily be changed to cbr but if i gotta do anything manually the app kind of defeats its own purpose. Spend the few extra bucks and get ComicZeal if you really like reading comics on an iPhone. The conversion process can be a mild pain but it does a great job with the resultant format (cbi) and doesnt chop like this thing does. It just needs a magnifying glass to be perfect..
2big2fail about iComic -comic reader-, v3.6