FORTUNE -- Alex Fitzpatrick's piece in Mashable Wednesday about Super PAC App -- a free application for Apple's (AAPL) iPhone, iPad and iPod touch -- pitched it as a tool for finding out who paid for a particular political ad.
It doesn't really do that, because current campaign financing laws allow donations to political action committees to be unlimited and anonymous.
But what the app does do is point users to independent articles and sites like PolitiFact and FactCheck.org that test the truthiness of an advertisement's claims.
The app uses TuneSat, a technology developed to spot unauthorized use of copyright music, to identify an ad by its audio signal. Just hold your iOS device up to the speakers -- as you would with music apps like Shazam or SoundHound -- when a political ad appears and Super PAC will try to match the ad to its database.
When I tested the app on ads I found on YouTube, it only worked about half of the time. But when it worked, the claims testing function was both useful and relatively nonpartisan. I learned, for example:
You can download Super PAC App from the iTunes store here. Did I mention that it's free?
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