The BRUNNEN-IQ app is more than just a reference book for well builders, planners and employees of water utilities. With the help of this application software for mobile devices, it is possible to quickly and easily carry out important standard calculations in the fields of well engineering and geothermal energy. In addition, a variety of information on industry-relevant topics in a compact and up-to-date form is available anytime, anywhere. Whether the calculation of annulus volumes, informatio