If you have a device you can install GrapheneOS on, there’s a button to record the call built right in to the phone app. It’s also a remarkably functional daily driver; I’ve been using it for months now and the only app I “lost” was Google Wallet. I can, somehow, still use all my banking and other finance apps that normally don’t work on custom ROMs.
If you want extremely low code, I recommend GPT4All. The prebuilt binaries/exes run locally on CPU and give you a choice of model to use so you can try out a couple to see which you like the best. It’s remarkably quick on my Ryzen 7 3700X, and it doesn’t take long to get a little web server running with Langchain if you want to put in a bit more effort, too.
These look great, cheers!