All rankings are fungible into a ranking, and Google is making this axiom painfully apparent to developers, publishers, and potential users with a new rank change icon in its major app listings on the Play Store.

You will be able to see which apps are trending up and which are being downloaded with these new icons in the Top Charts tab of the search. Unfortunately for some, the time context is completely lacking here – we don’t know how often download rates are tracked and how many locations an app has moved in the same time frame.

Alas, those who remember American Bandstand or still know Top of the Pops cannot go down the list with their worst radio announcer voice.