Abstract: A method for tracking liquid consumption includes determining, using a portable apparatus for monitoring liquid consumption, data indicative of an amount of liquid consumed by a user from a liquid container. The method also includes transmitting the determined data to an activity tracking device operably connected with the portable apparatus, for determination of: an amount of liquid remaining in the liquid container; and a liquid consumption plan based on the amount of liquid remaining, activity data, and user activity data arranged in the activity tracking device.