The story is great and well written. I like the app's minimalistic and unobtrusive feel. Congrats on the launch :)
My go-to thing for this UC for now is playing music, but Albums. Not playlists that go on forever. Albums have this great property of ending after ~40 or ~50min. But sometimes, since music is a mood-altering thing, it just does not go well with productivity, or you end spending too much time choosing the right music for the present moment, so I might give it a try!
Interesting idea! Never thought of albums that way.
Interesting thoughts, reminds me of Mr. Robot's WhiteRose hacker with the 1-minute clock reminder.
Sometimes, you just have to let time pass to find your answers. :)
New stimuli aren't always the answer.