MacWhisper does realtime system-wide dictation on your local machine (among other things). Just a one-time fee for an app you download -- the way shareware is supposed to be. Of course it doesn't use MoE transcription with 6 models like Aqua Voice, but if you guys expect to be acquired by Apple (that is your exit strategy, right?), you're going to need better guarantees of privacy than "we don't log".
I downloaded the turbo whisper model optimized for Mac, created a python script that get the mic input and paste the result. The python script is LLM generated and it works with pushing a key.
For 80% of the functionality for free and done locally.