It's understandable but I do have to say, all the initial beautiful prose on a black screen, several pages... And then a big white Sign in with Google, completely undercuts the message. I notice I had an almost visceral reaction to that. Maybe you can present it better somehow?
I felt the exact same! And I was absolutely "marketed" until the last frame, then I decided to drop because of this. Please OP add a regular signup method that doesn't involve a third party.