Downloadable tablet and mobile application software for calculating ballistic trajectories and firearm performance; downloadable tablet and mobile application software for calculating and analyzing ballistic data, including bullet drop and wind drift; downloadable tablet and mobile application software for displaying, mapping, graphing, interpreting, manipulating, communicating and transmitting ballistic parameters; downloadable tablet and mobile application software for calculating ballistic parameters, bullet trajectory, and optimal zeroing in shooting sports; downloadable electronic databases featuring information on ballistics, firearms, and ammunition; downloadable tablet and mobile application software for creating, storing, and sharing ballistic profiles for various firearms and ammunition; downloadable electronic publications, namely, manuals, guides, and charts, in the field of ballistics and shooting; downloadable tablet and mobile application software for simulating and visualizing ballistic trajectories and shot placement; downloadable tablet and mobile application software for integrating ballistic calculators with rangefinders, weather meters, and other peripheral devices; downloadable tablet and mobile application software for managing and tracking inventory of firearms, ammunition, and shooting accessories; downloadable tablet and mobile application software for managing shooter's log book.