Nadir

Nadir is a passenger flight companion built to keep working even when your flight has no Wi-Fi. Follow your actual flight using your phone’s GPS, GNSS and onboard sensors. See live speed, altitude, vertical speed, GPS track, cabin pressure and estimated cabin altitude while Nadir records the route you actually flew. Follow your flight - Live ground speed, altitude and vertical speed - GPS track and route progress - Detailed GNSS satellite reception and constellation data - Cabin pressure and estimated cabin altitude - Calibrated attitude display - Automatic and manual flight recording Maps that keep working - Offline world map - Downloadable high-detail route and airport areas - Actual recorded flight path - Altitude-colored flight tracks - Departure and arrival airport detail - Sovereign airspace and geographic context - Follow and recenter modes Weather and aviation context When an internet connection is available, Nadir can add: - Precipitation and cloud overlays - METAR and TAF airport weather - SIGMET aviation advisories - Human-readable pilot reports - ADS-B aircraft information Useful information is cached where possible so losing connectivity does not make the app useless. See what happened during your flight - Live and completed-flight trends - Flight milestones and phase detection - Recorded route and statistics - Flight history that remains stored locally - Detailed technical information available when you want to dig deeper Nadir is designed for passengers first, with advanced aviation and GNSS information available through deeper views instead of cluttering the main experience. No account is required. Important: Nadir is an informational flight companion. It is not certified avionics, a navigation system, or a replacement for official aviation instruments, weather products or operational flight-planning tools.