This thesis is centered around mobile application development, it is using JavaScript xml as its main language and is an experimentation on cross platform development using react native elements. It is an activity planner whose purpose is to streamline the day to day activities of its user. It was developed in 2022 when mobile application development was at its peak in business and with that in mind it was created. It explores the limitations of both native and cross platform development and compares the two methods of development, strongly displaying the evolution of mobile application development over the years. The project consists of two applications running on both iphone Operating system and android platforms.