App revenues ££ ??

[warrendunn]

Hi,

Does anybody know where to access data (ideally free) on the actual revenue an individual app earns?

TOP GROSSING ranks are all well and good but what kind of numbers are we talking here?

Even actual number of physical downloads over a period would be useful, not as usefull as monetary figure what with freemium apps complicating things a little.

Thanks in advance!