Is there a (mostly functional, don’t care about PDF) version of the tools which will work with the latest version of Calibre for Mac (5.11.0)? I replaced the hard drive awhile back and while I installed calibre (3.44), I didn’t get around to installing tools back then. I would like to update calibre, and install tools at the same time. I will probably be using Download & Transfer method to get AZW3 file (rather than Kindle for Mac).
(Now it comes back to me

my MBP is too old for the new stuff, I’ll be doing this on the new iMac.