IzzyOnDroid

SpeedCrunch is a high-precision scientific calculator supporting expression editing, history stack, unit conversions, radix systems, complex numbers and user defined variables.

Features:

• Calculations with up to 50 digits of precision
• History stack with value or expression recall
• Expression editing with system virtual keyboard
• Fixed decimal, scientific or engineering formats
• Decimal, binary, octal and hexadecimal bases
• Built-in functions, constants and units with search
• User defined variables and functions

Usage instructions can be found at the project’s Github presence.