Watch planes in real-time, save recordings, watch replays and share them with friends. All without the internet. Use a USB RTL-SDR or "DTV Tuner" to see nearby planes.
Max Planes decodes the data from ADS-B transponders and plots the data on a map. Connect a USB device and run a BEAST server (such as Dump1090 Mac Server) in order to view this data. Connect to another computer running dump1090 over a local area network to watch the planes it sees. There is no need for the internet to view live data from planes, everything can be collected locally.
See things you otherwise can't with normal plane spotting apps. You can see the altitude and squawk (not position) of planes in the spotting list on the left of planes with Mode C only transponders.
You can watch multiple data sources at once, save recordings as a file and rewatch them later. Send them to friends and they can re-watch them.
An internet connection is required to download initial map tiles if you wish to view planes on the moving map. After they are cached no internet is required.