That card got you paid for 11 years so dont feel dumb about it, but yeah the phone wins once you feed it good data. The catch is the app only knows what you tell it, so if you lie about your tool holder or your coolant setup it'll spit out numbers that eat inserts. What I do is keep the old card taped up for the oddball stuff, like drill press work or when a job is too small to bother plugging in, and use the app for anything with a real SFM range where the math matters. Gary's numbers were probably conservative on purpose because he couldnt dial in per-tool, so your 4200 makes sense since 6061 likes to be pushed. Run a few more jobs and compare your tool life before you fully trust it, because a better finish doesnt always mean the insert is lasting longer.