The "Geometry Pro" household has actually been designed to be the last word in purely geometric font styles, and this rounded "Soft" sub-family is the supreme web 2.0 design typeface collection.
Even though it is strictly geometric (as drawn with a compass and a ruler fixed to 90 and 45 degree angles) it is not slavishly modular: letters have varying widths, and the sidebearings, spacing and kerning has been finely adjusted to create smooth text.