Flyover Country is a National Science Foundation funded offline mobile app for geoscience outreach and data discovery. “The app analyzes a given flight path and caches relevant map data and points of interest (POI), and displays these data during the flight, without in flight Wi-Fi,” describes its website. It “exposes interactive geologic maps from Macrostrat.org, fossil localities from Neotomadb.org and Paleobiodb.org, core sample localities from LacCore.org, Wikipedia articles, offline base maps, and the user’s current GPS determined location, altitude, speed, and heading.”
Really nice for urban explorers. You could get at least some history of the area you are photographing. In time the software/ app could include information from local history (from libraries and historical societies) and even urban exploration photos taken from ruins, tunnels and rooftops.