Location-based assistance for personal planning

An apparatus comprising:

• a memory configured to hold a data structure that is indicative of a state of a user of the apparatus;
• a user interface comprising a display;
• and
• a processor configured to maintain the data structure and responsive to the state, to generate a map indicating targets within an area of relevance surrounding a present location of the user, and to provide, based on the map, via the user interface, a suggestion to the user of an action to be taken by the user with respect to one or more of the targets.

An apparatus comprising:

• a memory;
• a user interface;
• one or more sensors;
• and
• a processor configured to collect inputs from the one or more sensors with respect to motion of a user of the apparatus, and to assess, responsive to the inputs, a motion-related state of the user, and to provide, based on the motion-related state, via the user interface to the user a suggestion of an action to be taken by the user.

At least one computer-readable medium in which program instructions are stored, which instructions, when read by a computer, cause the computer to:

• receive from a first user an indication of an event to be scheduled, in which a second user is to participate;
• responsive to the indication, to autonomously transmit a request via a communication interface of the computer of the first user to a PDA operated by the second user in accordance with a predefined inter-PDA protocol;
• and
• upon receipt of a response from the PDA, in accordance with the predefined inter-PDA protocol, to automatically enter the event in a schedule of the first user maintained by the computer.