That's a good question! If you do a youtube search for Android Comic reader, you'll see some examples.
eg. http://www.youtube.com/watch?v=BHqgwRJgZ-4

While these readers are functional, they seem to lack the finesse of Comic Zeal.

But one thing is certain, the comic pages are destined to be better reproduced on a larger screen. With 7" you'll have to do a lot of pinching/scrolling or view comic panes individually (if this option indeed exists) to view.