From Sunlight Foundation:
Ad Hawk is our new iPhone and Android app that empowers you to identify political ads as they air and immediately learn about the secretive groups spending money to influence your vote. Simply activate the app on your phone when you hear a political ad on TV or radio and we'll return results within seconds. We paired powerful open-source audio fingerprinting technology to work in concert with our comprehensive data on campaign finance to bring you the best way to stay informed while you endure the onslaught of ads throughout the 2012 election season.
From ABC News:
By its title alone you’d think the Super PAC App was just a boring digital list of all the Super PACs or the groups supporting this years’ presidential candidates. (Although this list of these oddly named Super PACs is far from boring.) But no, the app is like the Shazam (the popular music recognition app) for political attack ads.Download the app, which is available for the iPhone and iPad only, hold it up to the TV when an attack ad is playing, and using audio fingerprinting it will pull up information about the ad, including what super PAC paid for it, how much money it has raised, how much the super PAC has spent, and information about the claims in the ad. You can then vote on the ad yourself.