That's definitely not bad considering that from what i read is not so easy anymore to sell apps in the store. But considering that the app is on the store since

That's definitely not bad considering that from what i read is not so easy anymore to sell apps in the store. But considering that the app is on the store since '09 it isn't one of those big instant AppStore hits, so i guess that the OP is aiming at seriously start building an app that has some potential to become one of those. Additional info would be appreciated.