Gimbal is the producer of the most widely deployed Bluetooth® Smart beacons in the world. With this technology, Gimbal provides a solution that allows users to receive relevant location-based content, directly to their mobile phones. However, the beacons need to be placed properly in order for them to be effective. We developed an iOS application that uses the phone’s sensors as well as signals from the beacons to create an accurate, interactive map of the installed constellation of beacons.