Digital professional assistant downloadable software in the nature of a mobile application for creating itineraries of real estate appointment for real estate agents, for adjusting itineraries of real estate appointments, for automatically changing real estate appointment schedules, when necessary, for creating client calendars and adjusting client calendars, for client activity tracking, for creating appointment notifications, for notifying real estate agents when it is time to leave for an appointment, for monitoring showings in progress and, if necessary, automatically notifying a showing agent to request an extension of time to complete a showing, for monitoring the listing status of properties involving a real estate agent's appointments, and sending an appropriate notification based on a change in that listing status, per property, for automatic rescheduling of appointments when a property becomes pending, for automatically sending cancellations of showing appointments for a property that becomes pending if the property is not accepting back-up offers from third parties, when a showing is cancelled, for notifying a showing agent to move up later appointments, if desired, for calculating driving times, for notifying showing agents and clients of time and distance to appointment location, for notifying listing agents or property sellers when a showing agent is running late, and to request a later appointment time, with approval required by listing agent or property seller, upon request, for informing real estate agents about the pertinent statistics of a real estate property using an audible output having a synthesized voice, and for searching for and identifying hot properties that are expected to quickly be off the market; all in the field of real estate sales and real estate rentals