I think I would pay for this in a heartbeat if it was more "available", as in not just a web app. I'd love a native app where I could use this in any textbox (web, app, etc) on my Mac. Ideally I'd be able to remap the key I use for mac dictation. I think I'd be fine with a popup where I write all the text and then it just inserts it after it finishes (so you can just render your UI and paste in the result instead of needing to interact with existing text fields.