Not yet but to quote their face book post
"Seres Vanadiel Will the Viz Manga App be coming to Android? I'd really love to be able to read my fav manga on the go on my phone!
8 hours ago · Like
VizMedia Possibly XD It took a little while for this addition, but if you guys keep asking it, our App team will have to bend to your wills XD
8 hours ago · Unlike · 3 people"
So spam away at them