cyph encrypted softphone is saass?
Is it saass https://www.gnu.org/philosophy/who-does-that-server-really-serve.html?
Is it non free software?
I don't know much about this service (mostly on account of the FAQ not being complete), but it looks to be nonfree and is definitely saass.
I wouldn't trust it. You're probably better off using a libre program like Mumble for chatting.
Thank you. I got the same conclusion. If keys were made on the computer, created on free software then the software would be fine.