Pretty slick for sure...my old flying buddy Warren Wagner suggested several years back to begin keeping manual records after each flight. I created a note book with a page for each model. Opening with the design parameters, weight, wing loading, CG, tip weight, line spacing and prop size followed with a dated line entry of each flight recording the lap and flight time, fuel and comments about the flight for me is an essential part of trimming out a plane. I guess though if you fly the same plane all the time a good memory will suffice but when you bring several planes to field and have a questionable memory as I do a little record keeping makes more sense.
Steve