Donkey Engineering - PEMDAS Touch

PEMDAS Touch

Calculate equations on the go.

$1.99. Requires an iPhone or iPod Touch.

Version History

Following are some notes about the versions:

Version 1.1
July 14, 2009

Added a function bar page with the binary, octal, and hexadecimal prefix shortcuts (0b, 0o, and 0x respectively).
Added a number formatting setting to display numbers in binary, octal, or hexadecimal formatting.

Added a function bar page for hyperbolic functions.
Added an option in the equations panel to insert an equation, instead of duplicating it.
Added ability to review answers too long to display by double tapping on the answer.
Revised the keypad so the answer changes transparency to indicate the equation has changed since it was last calculated.
Added and fixed a few other minor things:

Added an alert if you've never used the app before to let you know the default angular units are radians.
Revised the function bar so it now remembers which function page you were on between launches.
Revised the app so it should launch slightly faster.
Fixed a bug where changing the number formatting would show the autocached variable name in the keypad display.

Version 1.0.1
March 29, 2009

Divided the variable tab into constants, auto-defined variables, and defined variables.
Added a preference for changing the "pi" button on the keypad to an "ans" button.
Increased the speed in which the application launches.
Added an option in the equations tab to insert either the equation or the result variable.
Changed the way the ans variable works, so now typing "ans" acts like a shortcut to typing the variable the previous result was stored in.
Fixed a bug where the cbrt() function didn't work.
Fixed a bug that caused the wrong variable to be inserted when tapping a variable in the variable tab.

Version 1.0
February 14, 2009