Note that application requires Do-Ra device connected to the smartphone via microphone plug to measure radiation level and doze. If you don't have one, you could run the app in emulation mode. For more information about Do-Ra project check http://intersofteurasia.ru.
DO-RA is the personal dosimeter and radiometer suitable for everyday use: monitoring of background radiation level (equivalent dose rate of gamma radiation) and personal doze estimation during the measurement time.
See radiation data collected across the world and make your own contribution to the radiation safety map with DO-RA device and software.