Settings

Email Type

The type Formatted text will use a monospaced text font, so that all values are vertically aligned. If it does not work with your Email client (currently only Google Mail supports it), you should select Plain text.

Decimal Point

You may select Comma or Point, independent of your localization.

Decimal Scale

You may choose between 0 and 9 decimals.

Fixed Decimal Point

If this is checked, then on input the decimal point is assumed to be at a fixed position according to the scale and you do not have to enter the point.

Number Keys Layout

You may switch between the typical calculator keys layout or the phone layout.

Portrait Mode Keys

In Portrait Mode the keys on the left side can be switched between tax calculation keys and memory keys.

Button Background

The button background color can be white or shades of light colors.

Button Text Color

The button text color can be black, white or dark grey.

Rounding Modes

Up Always up.  
Down

Always down.

Half Up Round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up.
This is the default mode, useful for most business applications, especially for tax calculations.
Half Down Round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down.
Half Even Round towards the "nearest neighbor" unless both neighbors are equidistant, in which case round towards the even neighbor.