Apple stock price is going up, but how is it doing compared to Google? Or to the NYSE in general?
Stock Vs Stock exists to compare stocks against each other. It answer everything from the simple questions like how has one stock performed against another; to far more interesting questions like, "How have Microsoft faired against Google, when you factor out the general movement in the NASDAQ?"
Stock Vs Stock version 1 covers the NYSE & NASDAQ, with more to come soon.
WARNING: If you own Facebook stock, do not use Stock Vs Stock to compare FB with AAPL. It will depress you.
(On the other hand, if you own Apple stock, it'll cheer you up every day...)