It would be nice if this app remembered some things about the last time i used it - like duration and notification preferences. This milestone the user should be able to use the app, and basically always open it in the previous state they left it.

Since this could get cray:
Let user turn off local storage in preferences. This would be ironically remembered in local storage
Give user access to a reset defaults button in the preferences, and turning off LS would acutally also use that same resetDefaults() function.