One Scientific Calculator

One Calculator key features:

● Scientific calculator, with calculation history and RPN mode
● Graphing calculator (plotter)
● Unit converter
● Number base converter
● Matrix calculator
● Material Design and ease of use

One Calculator is suitable for solving easy common calculus and more complex mathematical calculations.

Detailed feature list:
● Basic Arithmetic
● Definite integrals
● Trigonometry (sin, cos, tan, arcsin, arccos, arctan)
● Complex numbers
● RPN calculations (Reverse Polish notation/postfix notation)
● Graphs for X,Y equations
● Measurement unit conversion
● Conversion between decimal, hexadecimal, octal and binary
● Matrix calculus
● Intreactive chronology of operations
● Specialized warning of errors
● Support for tablet and smartphone
● Themes

Recent changes:
- Improved support for new versions of Android.
- Fixed bug in the widget, for some pro users it wasn't unlocking properly. If the issue is not solved for you, send me an email please.