This is the biggest update in many years, a complete rewrite from the ground up. It adds a multitude of new features and improvements, including many of those requested by users over the years.
Automatic Trig Labels (e.g., π/4)
You don’t need thee separate trigonometric grid type anymore. Common fractions of π are recognized and formatted in terms of π automatically, no matter what grid type you’re using. (See help article).
The New Plot Panel
Instead of six different permanent plot panels, there is now one panel from which you can add, remove, and even duplicate or re-order plots. Now you’re in control of whether you want to modify an existing plot, or just wipe it out and start over. See the plots panel article for details.
Positioning Text Labels
Positioning labels precisely is now much easier. You can still drag labels as before, but now you can nudge them into place with the keyboard as well. See the positioning texts article for details.
Special Characters in Annotations
The new Special Characters panel contains a wide variety of mathematical symbols to use in your annotations, captions, etc. Just click the symbol, and copy it into your text. (See details.)
Graph Styles and Appearance
Global settings for text size and line width have been replaced with individual styles for each plot and annotation. You can also choose a background color other than white.
Members with a Boost level subscription have still more new options. Boost members can replace the default label font with one installed on their computer, and they can elect to treat labelled gridlines as major gridlines with a bolder style.
New Plot Types
You can now graph step functions (e.g., the greatest integer function) without the convenient Step Function plot type. There’s also a Vector plot type for illustrating resultants, addition of vectors, etc. For polar plots, the new Radial plot type lets you graph lines such as θ = π/4.
Improved Plot Types
Piecewise plots no longer fail to draw open circles at discontinuities that occur when the same factor is in the numerator and denominator. This typically occurred when graphing rational functions.
Implicit plots can now have dashed line styles and arrows at the graph edges, just like other plots.
Parametric plots can now have up to four direction rrows.
Stored Favorite Settings (Boost members only)
Do you have a favorite group of settings for your grid? A favorite set of line styles for your plots? Now you can set them as favorites so you don’t have to re-enter them every time you open GraphFree. And if you have to use different settings from time to time, you can go back to your defaults with a click of a button. See the full article for details.
Customize Colors & More (Boost members only)
Drop-down menus area lot simpler and less error-prone than making you type in a specific value for every style option. But sometimes you want a different set of colors, or a larger line width, or some other style choice that isn’t on the menu. That’s what the customize page is for. If you’re not delighted with the choices that come out of the box, you can change them. See the full article for details.
Better Keyboard Navigation
If you typically use the mouse between to move between controls, I encourage you to make friends with the tab key to jump between controls more quickly. When you get used to keyboard navigation, you may also find it faster to use the arrow keys with drop-down menus, or the Enter key for a toggle switch.
New Built-in Functions
All trigonometric functions now have versions that use degrees instead of radians, so you don't need to don’t have to include a conversion factor every time you need degrees. The sin function still uses radians, but its sindeg counterpart uses degrees.
Other new functions include nthrootand logb.
See the list of all built-in functions.
Plot Size Settings
The plot size setting now includes just the plot itself, without margins. This makes it much easier to create a grid with square cells, but an aspect ratio other than 1:1.
You can new enter any plot size between 100 and 900 pixels.
Finally, you can also add extra space above, below, or to either side of the plots to make room for annotations or oversized grid labels.
Other Improvements
Graphs with transparent backgrounds can now be copied to the clipboard, even on Windows.