One of the first things we thought when TomTom announced that it would finally be making an honest-to-goodness iPhone app was this: “what will this do to standalone GPS sales?” It’s a reasonable question–TomTom has long since made its profits by selling hardware with routing software built in. The app within was just a portion of the equation, while the actual device was where the money was.With smartphones becoming ever more pervasive, one has to wonder if profits will sink as individuals purchase cheaper