just a little background info if youre totally confused. TC Electronic has newish line of really good FX pedals with a function called "tone print." The tone prints are basically downloadable pre-programmed settings tweaked by pro guitar players and also people at TC. A lot of the settings have a bit more detailed effects that you cant recreate with just the knobs on the pedal itself. For example they have a tone print that recreates the tape delay of a vintage Echo Plex. Your pedal can only store one tone print at a time, and you used to have to hook up the pedal to your computer to download new ones. Until now.
I have their delay and reverb pedal but never really bothered with the tone print function because it just seemed like an added hassle. But this phone app is just fucking cool and makes it so easy