BOReLOG mobile application is for anyone who works and or is engaged in subsurface exploration/investigation in soil and rock. This is a simple app which is developed with an objective of digitization/automation of borehole logging by field engineers. User can navigate the app quickly and smoothly with clean interfaces designed for Android services. The app provides preliminary subsurface stratification adhering to standard guidelines based on information fed by the user, thus reducing flipping through handbooks, textbooks, standards, etc.