Calendar is a minimalist mobile drawing journal that gives users a dedicated canvas for every day. It provides a simple, distraction-free space to capture sketches, handwritten notes, ideas, and memorable moments in a clear chronological structure. Our team developed date-based canvases that preserve each day’s content separately, along with fast navigation to the previous day, next day, any selected date, or today. The drawing toolkit combines pens, markers, multiple colors, stroke controls, and an eraser in one accessible interface. Undo and redo actions allow users to experiment freely, while a confirmation dialog protects complete daily canvases from accidental deletion. The clean, paper-inspired interface keeps the creative workflow natural and easy to understand.