Not a very complicated app to build, so now I know how to launch my own Chrome extension! Now I have a new hammer so everything is looking like a new nail.
Highly recommend looking into building one as it's a great way to prototype an idea (took me less than a day).
https://chrome.google.com/webstore/detail/2fa-security-reminder/febibgeklbeceggcacccdljlpfjhfjih
Would anyone find my extension useful? :)