This site contains a very accurate user-friendly online mathematical and scientific calculator with usage website technical guide and summaries, as well as, user feedbacks and discussion. In addition, it has an optional Japanese language site and a free app for smart devices. Each topic in the mathematics is listed related to its disciplines, so students can easily access their topic of interest related to their math courses, projects, or assignments. Overall, there are an enormous number of options and applications. For example, the main page includes buttons for Life, Education, Professional and Advanced areas. Education includes two categories – Mathematics and Statistics. Mathematics then includes eighteen sub-categories such as triangles, area, volume, trigonometry, logarithms, complex numbers and probability. An example of a specific application within the volume sub-category is “Volume of an Equilateral, Triangular Prism which features an image, a formula and examples, as well as the interactive calculator. The Science category includes ten sub-categories including uniform motion, astronomy, sound and light, electricity and magnetism. The Professional area has five categories including numerical integration and linear algebra. The Advanced area features an astonishing array of functions including elementary, Bessel and Special.