There's a few things:
1. This is significantly more efficient than most other apps. It was built using Rust and GPUI, so the app itself runs in ~5MB of memory. Most other apps are built using Electron or Tauri which results in a lot more memory and CPU usage.
2. This uses different backends for different systems, with the macOS backend being built on top of WhisperKit. This further adds to the efficiency.
3. AI enhancement is supported (but not required) using APIs, but also your local Claude Code or Codex CLI. That means for a large percentage of people AI enhancement requires basically no setup.
4. I am obviously highly biased, but I think this both looks and feels better than any other open source solution I've tried. This is of course going to be up to personal preference.
There's other things I could mention, but those are the big ones in my mind. I'm building this to take on WisprFlow, so the whole goal is to do what they do, but better and FOSS.