Before anyone tells me, yes I do know that FEBuilder has a tool similar to this in the character editor.
FEGBA Growth Calculator is a command line tool that I wrote in my free time a little while ago. It's nothing revolutionary, just some coding practice. However I've seen that it comes in handy every once in a while with balancing and such. I thought I may as well share it here.
Also, I've been noticing that Chrome doesn't quite like downloading this file in particular, if your anti-virus freaks out, please do not worry about malware.