Extra-Plus Calculator Lite is a free calculator app available for iPhone users. Developed by Albert Parti, this app falls under the category of Business & Productivity. With its simple and intuitive interface, Extra-Plus Calculator Lite provides users with a range of basic and advanced mathematical functions.

The app offers a variety of features, including memory management options such as MC, M+, M-, MR, and CE. Users can also perform calculations involving trigonometric functions, pi, square roots, and more. The iPad view of the app is limited to portrait mode and includes an iAdBannerView for advertisements.

Extra-Plus Calculator Lite also provides an information and settings view, where users can access additional features. In-app purchases are available to remove advertisements and unlock the full version of the app, which includes options for tax calculations and theme changes.

Please note that the Extra button is inactive in the Lite version of the app, and landscape mode is not supported on the iPad.