Application of construction costs to calculate and follow up all construction expenses for all stages of construction from the beginning of architectural design until completion and display them in a simple and easy-to-use manner. The application is designed in a simplified way to quickly record expenses according to the construction stages and display them in a very simplified way. The application also helps in setting an estimated budget for implementation. It also shows all the expenses paid to the contractors, such as (the bone contractor, the drilling contractor, the electrical engineering office, the plumber, ………)