Guitar pick "finger print" frequencies

Dear friends,

On Pickslanting Primer course Mr. Grady shows in the video several graphs where the accentuated or diminished frequencies referring to each pick are presented. I believe he uses Ozone 8 and probably some internal tool to calculate the average range of behavior in a certain spectrum of frequencies.
So, I would like to ask if anyone is aware of a free tool or process that allows me to take a fingerprint of each pick. Like a graph or some kind of image that I can use in order to demonstrate the difference between several picks.
At the moment I can’t buy a software with the cost of what is shown in the video, although it is certainly very valid and useful.
Very grateful for the help!