If you want a simple pgm, Google up Treasure tracker. I think it's still out there. You can login how many of each coin you find & it'll total for the trip & a grand total. I've had it for a bunch of years. On Jan. 1 I move the files to a folder for each year. It'll make new files for the year the next time you use it.
Very simple, very effective, if you don't need a bunch of bells & whistles!