The plan is to have achievements and leaderboards (if possible) for each platform (iOS, Android, Windows, etc). Our initial platform is iOS so we will be using Game Center for leaderboards and achievements. After the initial release we will need to make some changes, but we will be releasing on other platforms.
We are in the Top 50 of 2012 for upcoming apps! Go vote under the arcade section for Sleep Little Baby. Indiedb.com