Downloadable mobile software application for viewing and sharing data regarding interior design and home décor, invoicing, processing payments, tracking time, managing to-do lists, and monitoring the progress of tasks in the fields of interior design, home and office styling, home and office décor and architecture; Downloadable mobile software application that enables interior designers and architects to view, bookmark, annotate, and share data, information and media content regarding interior design, home and office styling, home and office décor and architecture, and related products; Downloadable mobile software applications that enable users to create, upload, bookmark, view, annotate, and share data, information and media content; Downloadable mobile software applications for invoicing, purchasing, payments, project management, and time tracking in the fields of interior design, home and office styling, home and office decor and architecture; Downloadable mobile software applications for locating home décor stores, bookmarking favorite stores and creating a shopping checklist for designers and architects; Downloadable mobile software applications for creating, managing, and sharing to-do lists between interior designers, architects, and sub-contractors; Downloadable mobile software applications for use by interior designers and architects to monitor the progress of sub-contractors on completing tasks on to-do lists, to track the geographical location sub-contractors while completing tasks on to-do lists, and to provide notifications that all tasks on a to-do list have been completed by sub-contractors before said sub-contractors have left a specified geographical location or job site