Sensor network for breast pumping mothers

A graphical user interface displayed on a device screen, comprising:

• a first interactive graphical user interface element representative of a breast milk inventory associated with a particular pumping session, wherein the graphical user interface further provides graphical elements representing a freezer icon and a refrigerator icon, and wherein breast milk collected during the particular pumping session is identified as being stored in a freezer or a refrigerator based on a user dragging the graphical user interface element representative of a breast milk inventory associated with a particular pumping session on the device screen to the freezer icon or to the refrigerator icon in the graphical user interface, and
• a second interactive graphical user interface element providing a breast milk freezer inventory and a refrigerator breast milk inventory which are stored in the device and updated in the second graphical user interface based on the user dragging the first graphical user interface element representative of breast milk inventory to the freezer icon or the refrigerator icon,
• wherein the breast milk inventory is automatically updated with a visual indication of a total volume of milk pumped.