Geometer is described as 'Program is used for geometric calculations. Based on the values of the geometric shape it can calculate the unknown one. Can be used for calculating values of a triangle, a right-angled triangle, circle, pie slice, segments of circles, squares, cylinders, cones' and is an app. There are 2 alternatives to Geometer for a variety of platforms, including Mac, Windows, Web-based, Android and iPhone apps. The best Geometer alternative is GeoGebra Geometry, which is both free and Open Source.