Skyby vs Arclune

Know exactly what's flying over you. Look up, and whatever is overhead appears on screen. Airliners, private jets, helicopters, and more, identified instantly. No searching, no typing, no menus. NOTE: Some features shown in the screenshots require Skyby Pro. Whether you're a planespotter camped at the end of a runway or a casual fan glancing up from home, Skyby reads the sky in real time and shows the aircraft directly above: the airline or operator, the aircraft type, the altitude, and, for scheduled flights, where it came from and where it's headed. An inbound indicator shows when a flight is coming into range. Two ways to use it: Set it and forget it. Prop Skyby on a desk, shelf, or windowsill and leave it running: a quiet radar for your patch of sky. Set an alert for the aircraft you care about, and Skyby chimes the moment one flies over. Pull it out and look up. On a walk or in the backyard, open Skyby and see what's flying over right now. From airliners to helicopters: Skyby identifies it all. The passenger and cargo jets, the private planes and business jets, the helicopters overhead. And yes, if a blimp drifts over, Skyby catches that too. Prefer to keep it to the airlines? Flip on Commercial Only in settings. Set your spot, or take it with you: Use your current location Drop a pin anywhere in the coverage area to watch the planes over home while you're away Or set the pin to live, and Skyby follows you as you move WHAT YOU GET Instant overhead ID for the aircraft above you Adjustable search area, up to 3 nm free (wider with Pro) Alerts that chime when a plane you care about flies over (A380 and 747 built in, free) An inbound indicator when a flight is coming into range Real routes and aircraft types for scheduled flights A logbook that saves your catches automatically Available across the US, Canada, UK, Europe, Australia/New Zealand, Japan, Korea, Mexico, Philippines and Singapore today, with more on the way Skyby Pro adds aircraft photos matched to the tail number (when available), custom alerts (any airline, aircraft type, flight number, or tail), your full logbook with search and bookmarks, detailed stats, and an even wider search radius. Skyby runs on iPhone and iPad, and it shines on iPad propped up on a desk or shelf. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

How far apart are airports, really? Arclune shows airport-to-airport routes as great-circle arcs on Apple Maps, making distance, scale, and time context easy to understand. Search a bundled offline airport database by IATA, ICAO, FAA/local code, airport name, or city. Compare direct and multi-leg routes, add stops or shape points, and view distances in kilometres, nautical miles, and statute miles. Recent routes stay local on your device so you can reopen common comparisons quickly. For time context, Arclune uses selected aircraft assumptions, route allowance, and typical seasonal wind information. Share cards export a clean route view with map, distance, and branding. Arclune is an information and visualisation tool. Do not use it for navigation, flight planning, dispatch, fuel, weather, NOTAM, safety, regulatory, or operational decisions. Data, maps, wind values, and time estimates may be incomplete, inaccurate, non-operational, or out of date.