My Grapher/My Grapher HD 3.1 is now available as a free update on the App Store!
In the new version, you can tap and hold on a function in the Equations editor to perform various actions on it, such as finding a best fit line of a data set or editing attributes of a graph. You can now edit the line thickness, line dash and visibility of equations. Also, you can edit the shape of data points and whether they should be connected.
My Grapher 3 introduced a brand-new user interface with new equation typesetting, new notable points, and even a new color picker.
Please leave a comment if you have any questions or comments. If you find a bug, you can contact me from the Settings/About menu in the app.
An Isosceles update will also be available soon!