RaMBLE - Android Bluetooth LE Scanner
RaMBLE is a free tool that developed as a Proof-of-Concept to highlight privacy concerns with the Bluetooth Low Energy protocol. For more information on BLE read our original blog here, and its follow-up here.
RaMBLE collects BLE advertising packets, and tries to identify devices based on their MAC address and the content of these packets. You can view past scan results, filter them, export them to a database and view them on a map.