Calculator HD is a free calculator app available for iPhone users. It is a simple and well-designed app that offers a high precision engine for accurate calculations.

One of the standout features of Calculator HD is that it displays the result while typing the formula, making it easy to catch any mistakes or errors. Additionally, the app offers multiple undo functionality, allowing users to easily correct any input errors.

Calculator HD also provides the option to switch between workspaces, allowing users to organize and keep track of their calculations. The app offers a persistent history feature, which saves previous calculations for easy reference.

The specialized keypad for iPhone and iPad ensures a smooth and intuitive user experience. Moreover, Calculator HD supports a Bluetooth keyboard, making it convenient for users who prefer typing on a physical keyboard.

The app also offers a right or left-handed mode, catering to users with different preferences. Printing calculations is made easy with AirPrint compatibility, allowing users to conveniently print their calculations.

Calculator HD also provides the option to share the calculation history via email, making it convenient for users to send their calculations to others.

Overall, Calculator HD is a simple yet powerful calculator app that offers a range of features to enhance the user experience. Its user-friendly design and high precision engine make it a reliable choice for all your calculation needs.