The company's announcement sums up the app's features perfectly: "Think of it like Shazam," the post reads, "but for riffs." Indeed, that's exactly what it is. The Rifftrax app uses your device's microphone to listen for a movie and automatically syncs Rifftrax playback to the film. It's simple and easy... but not perfect. Despite offering easy access to the user's library of "just the jokes" RiffTrax, the app doesn't support Bluetooth speakers just yet. Still, the app is free -- and better than trying to sync the audio up yourself. The Rifftrax app is available on both Google Play and Apple's App store. Check out the source link below for additional details.