I need a mobile app for both iOS and Android platforms. The primary function of the app is to allow users to share construction plans with their team. Key Features: - User authentication and secure login - Ability to upload and access construction plans - Direct messaging feature for sharing plans within the app - User-friendly interface Ideal Skills and Experience: - Mobile app development for iOS and Android - Experience with secure user authentication - Proficient in creating intuitive UI/UX - Familiarity with direct messaging functionalities