To own your Momentum planning experience, you’ll probably want to think about how to customize the app to fit YOU.  

You can decide if you're feeling the Daily, Weekly, or Monthly level most, or what day you prefer to start the week.

Check out "Appearance” in your Settings, and you'll find: color themes, preferred planner view, time format (12- or 24- hour), time zone, week start day (Monday or Sunday), and your working hours (when you start and end your day).