Citizen Calculator app is a free iPhone application developed by Devkrushna Infotech Private Limited. It falls under the category of Utilities & Tools and offers a range of features for both business and everyday calculations.

The app includes all the basic calculator functions, such as addition, subtraction, multiplication, division, and percentage calculations. It also provides additional features like M+, M-, MR, MU, GT, and SQRT, making it suitable for day-to-day business calculations.

One of the standout features of Citizen Calculator is its design. The app has a visually appealing interface with large buttons that are easy to use. The calculator also includes a clear button to quickly erase the display area and a backspace button to correct any input errors.

During calculations, the app displays operators symbols, making it easier to follow the ongoing calculations. Additionally, the app provides a pleasant sound and vibration feedback, giving it a realistic touch.

Overall, Citizen Calculator is a well-designed calculator app that offers essential features for both personal and business use. Its user-friendly interface and additional functions make it a handy tool for anyone in need of a calculator on their iPhone.