I wish I knew where customers came from, but the app Store and Android Market are both black boxes.

I'm sure some people find apps from within the store (e.g. searching for "swedish") - but I expect most to come from youtube (where there are lots of GoSwedish videos) and then search for the app by name.

Update: Or maybe I just need to do more to get the word out. I sold 10 Android copies yesterday! (Thanks HN!)