GPS Test & Satellite Check

GPS & Satellite Check is an honest GNSS diagnostics tool that shows exactly what your phone's location hardware can really do — no guessing, no fake numbers.

See every satellite your device tracks across all global systems, watch the live sky plot rotate with your compass, and read real signal strength, accuracy and fix details in plain terms.

WHAT YOU CAN DO
• Run a fast GPS test and see your live fix, accuracy and time to first fix (TTFF)
• View a live sky plot of satellites with a rotating compass
• Check signal strength (C/N0) for every satellite, in view and used in the fix
• Detect dual-frequency / L5 (and E5a, B2a) support — a real test, not a guess
• See your coordinates in decimal or DMS, with altitude and speed
• Read raw NMEA output and GNSS raw measurements live

ALL GNSS CONSTELLATIONS
GPS (USA), GLONASS (Russia), Galileo (Europe), BeiDou (China), QZSS (Japan), NavIC (India) and SBAS augmentation — a constellation is only reported as seen when your phone actually tracks it.

BUILT ON HONESTY
Many "GPS test" apps invent capabilities your phone does not have. This app derives every result from what the hardware truly reports: dual-frequency is shown only when an L5-class signal is actually observed, and a system is never marked unsupported just because it is out of view.

PRIVACY FIRST
Your coordinates stay on your device. The app needs location permission only to read satellites — it never logs, uploads or sells your GPS position.

Perfect for checking a new phone, testing GPS accuracy before a hike or drive, troubleshooting a weak signal, or simply exploring the satellites above you.

Download GPS Test & Satellite Check and see the sky as your phone sees it.