Classicalc is a unique and classy calculator app available on the iPhone. Designed to be visually appealing and straightforward, it offers a delightful twist by incorporating actual Grand Piano major scales into its color themes. The app features Instant Calculation, which computes formulas as you type, eliminating the need for the equals sign and saving you time with each calculation.

One standout feature of Classicalc is its adherence to the mathematical order of operators, ensuring accurate results. Additionally, users can seamlessly transition their calculations between their iPhone and Apple Watch. The app retains your most recent equation, even after closing it, allowing for a seamless user experience.