Saw this in an aviation newsletter… Anybody heard of it or try it out? It's an app that monitors and reports of different type drones if they are within 1/4 to 1/2 mile of the user. Checkout the website: Dronewatcher.com From the website: DroneWatcherAPP .. the APP that turns your Android® smartphone into a drone and small UAV detector. Are you concerned that your neighbor is spying on you with their drone? Is your business concerned that your competitor is snooping on your operations, monitoring your yard inventory and incoming and outgoing shipments? Do you have a high level facility such as an airport, prison or industrial plant that needs to monitor and control its airspace from unauthorized drone activity? The DroneWatcher APP turns your Android™ smartphone or tablet device into a drone and small UAV detector that detects, tracks, alerts and records information on ~95% of consumer drones using advanced signals intelligence technology. The app detects, tracks and alerts most commercially-available consumer and prosumer drones and records data including the drone type and ID which can be used to document incursions and support apprehension and prosecution by local law enforcement. Note: DroneWatcher APP does not detect small toy drones or professional or military type drones. The DroneWatcher APP runs in the background and only provides alerts when a drone is detected within its monitoring range (usually ¼ to ½ miles depending on site conditions). Features and options in this free version include user selectable alerts (visual and audible and 6 sound options plus mute and vibrate alert), ability to stop tracking specific drones and to reset the clear list. The DroneWatcher APP can also be installed and operate on non-cellular Android tablets as long as the device is connected to a local WiFi network. For best detection sensitivity and range of detection performance, when using the app inside a building place the device near an external window or wall. It is also recommended that a device using the app as a stationary sensor (e.g. to protect home or business privacy) that you keep the device plugged into external power.