Open-Source Speech-to-Text On-Device

I have been using the dictation feature on my iPhone for several years. Initially, I was very skeptical. However, over time, I began using it more and more frequently and transferred this habit to my Mac as well. While the dictation got better and better (at least in my subjective opinion), I didn't like the idea of sending even more of my voice and, above all, even more of my content to Apple…