OPie RPN Calculator 3.0

This app is a multifunctional tool that includes an RPN scientific calculator, RPN basic calculator, equation plotter, one-button statistics, linear equation solver, and unit converter.

For data entry purposes, the E-Stack Editor allows users to efficiently manage numbers on the stack, especially useful for statistical analysis.

The linear equation solver has the capability to handle up to 6 simultaneous equations.

Users can effortlessly plot up to 8 equations from the Graph page.

The unit converter offers conversions for various categories such as length, area, temperature, volume, weight, angle, digital storage, energy, pressure, force, time, electric current, speed, and luminance.

Additionally, users can hide the tab bar by swiping down on the keyboard and display it again by swiping up.