Fingerprint Map Builder helps users to create fingerprint maps on their way. It supports several technologies (i.e. Bluetooth, WiFi and PLMN) and allows maps to be easily embedded as regular pictures. Fingerprint Map Builder gathers not only RSSI data, but also RTT in WiFi networks. This latter metric is collected whenever is available, even if the access point doesn't advertise compatibility with the IEEE 802.11mc standard. The application includes some icons designed by Freepik.