Rockwatch is (hopefully) now available in the Ovi Store:

http://store.ovi.com/content/394053

It'd be helpful if someone could confirm that they're able to download it before I make a more public announcement, as I'm just getting the "Download failed, please try again" message from the store app. Not sure if this is just because I'm the author, or if its the UK mirrors not having updated or some other cause.