Scientific Calculator is a hand-lettered cassette-style scientific calculator. Scientific Calculator is the everyday deck â€” numbers, brackets, percent â€” and flipping to side B turns the same sheet into the scientific program: trig in degrees or radians with inverses, logarithms, roots, powers, factorial, modulo and the constants pi and e, all through a safe built-in parser with a live reading as you type. Every solved calculation lands on the tracklist as a numbered entry tagged with the side it was recorded on, with its time right-aligned against the margin, and tapping an entry reuses its result. Your tracklist persists: it is kept in the browser for anonymous visitors and synced to your VibePlat account when you are signed in. The interface follows the viewer's locale in English, Chinese, Japanese and Spanish, and the keyboard works throughout (digits, operators, brackets, Enter, Backspace).