Here are a collection of screenshots of Graphulator in action.

The main calculator based user interface
The main calculator based user interface.

A graph of sin(x) show the grid without axis scale locking
A graph of sin(x) showing the grid toggled on, and with axis scale lock turned off.

A graph of sin(x) with locked axis scale grid
Another graph of sin(x) with the grid, but this time forcing the scale of the x and y axis to be locked together. Notice that the grid is perfectly square.

The table view showing actual (x,y) values
The table view from the graph page, showing a selection of the actual x and y values.

The settings panel on the graph screen
The settings panel for the graph page.

A graph of a circle
A graph of a circle.

Interesting graph involving square roots
An interesting graph involving the addition of square roots.