It was designed by teachers to meet National Council of Teachers of Mathematics standards. I was annoyed to find a big typo on the administration menu and another in the printed manual. Still, I examined the program thoroughly and feel it has decent content. The tracking of student progress is top-notch. Ages 5 to 8.
Geometry really begins in kindergarten with the concepts of size, area, perimeter, and symmetry.
Mighty Math does an excellent job of introducing and teaching those skills, as well as the more common math skills of addition and subtraction. It also ventures into early multiplication and division, making this a program that grows with the student. Add in place value and Venn diagrams, and you have an original early math program. But then, I would expect no less from the producers of the famous Millie's Math House. Ages 8 to 13.