Pro

1. User-Friendly Interface: The iPad's default calculator app offers a simple and intuitive interface, making it easy for users of all ages to perform basic and scientific calculations.

2. Accessibility: It's pre-installed, ensuring immediate availability without the need for additional downloads, and integrates seamlessly with other iOS functionalities.

3. Multitasking Support: It supports multitasking features like Slide Over and Split View, allowing users to calculate while using other apps simultaneously.

Con

1. Limited Functionality: The iPad calculator app lacks advanced mathematical functions, limiting its usefulness for complex calculations.

2. No History Log: The app doesn’t save previous calculations, which can be inconvenient for referencing past work.

3. Unoptimized Interface: The design is not well-suited for the iPad's larger screen, potentially leading to a suboptimal user experience.