As far as I'm concerned, there are unofficial ports of Clockwork Poison for Android, but I think they're for versions previous to v1.0. The truth is you're not the first one to ask this, and it'd be pretty doable for Clockwork Poison, since it is very similar to a plain VN with few particularities, but I can't say the same for Melodic Dates, since it's quite hard for the Renpy engine for Android to emulate such mini games and all the menus and stuff, much less for the sequel of Clockwork Poison I'm working on.
I'll see about the Clockwork Poison one though!