mishusk/ClassRoutine ? reverse-engineered prompt

Build me an Android app called ClassRoutine that helps students keep track of their classes and tasks in one place.

I want a clean, easy to use app where users can add and edit their class schedule, exam schedule, and notes, then view everything in a simple organized way. It should also let students share schedules and notes with others, and create groups where they can chat and обмениваться photos and videos. Make it feel friendly and practical for students who just want to stay on top of school life.

Please set it up so the main screens are easy to navigate, with a place for routine, exams, notes, sharing, and group chat. Use current best practices for Android, and if you need to look up anything current online, go ahead. Focus on making a solid working version first, with basic sharing and messaging working well before worrying about extra polish.