Hi 5x5, not an authoritive answer, but I understood the Live Flight Tracker to be a standalone subscription service, whereas the RB is a standalone receiver/detection/decoding unit which detects ADS-B equipped A/C in your receiving area, with access to worldwide (although very patchy and sparse over 90% of land and ocean - very good coverage western europe) network, no extra charge 5 minutes delayed access for first 12 months of registering for network service with brand new RB. HTH. CGJon