OpieSwenson

OpieSwenson builds fun and useful apps for the iPhone and iPad.

Opie RetireFIRE page

Quickly figure out what you need to do to retire early

OPie RPN Calculator page

Scientific calculator, one button statistics, and linear equation solver

Isentropic Calculator page

Handy isentropic flow solver without breaking out your tables.

OPie Unit Converter page

Handy Stand-alone unit converter. Converts Length, Temperature, Area, Volume, Weight, and Angles

OPie Tip Calculator Page

Handy Stand-alone unit converter. Converts Length, Temperature, Area, Volume, Weight, and Angles

OPie Mohrs Circle Page

2D and 3D Mohr's circle calculator

Standard Atmosphere 1976

Standard Atmosphere calculator based upon the US Standard Atmosphere 1976.