THE Comic Reader

This is by far the best comic reader available on iOS, no contest. Its got the best UI, best organizational features, cloud import (Dropbox, et al), etc - and if you also happen to have an iPad Pro, the reading experience is unmatched.

The only thing that keeps me from giving a full 5 stars is the inability to delete pages (like ads) or manually select your cover pages (for comics that include variant covers).

Veraxus about Comic Zeal Comic Book Reader, v9.0.2