OmniCalc is a feature-rich calculator app available for iPhone users. With its easy-to-use interface and wide range of functions, it is a versatile tool for both basic and advanced calculations.

One of the standout features of OmniCalc is its ability to scroll through your operations and make changes with instant results. This allows for easy editing and correction of calculations without the need to start over. Additionally, the app includes date math functions, making it convenient to add or subtract dates from each other. You can also perform calculations involving adding or subtracting days from any given date.

The app offers a unique feature that allows you to rotate your iPhone/iPad to instantly switch between different calculators. This makes it convenient to switch between standard, scientific, statistical, and date math calculators without any hassle.

OmniCalc also provides the option to annotate and save a series of operations, allowing you to create your own conversion calculators. You can save formulas or operation history in your own math library for quick and easy access.

Overall, OmniCalc is a reliable and user-friendly calculator app that offers a wide range of functions for various mathematical needs. Whether you need to perform basic calculations or complex statistical analysis, OmniCalc has you covered.