No ads, and no trackers - GPSTest displays real-time information for GNSS and SBAS satellites in view of your device. A vital open-source testing tool for platform engineers, developers, and power users, GPSTest can also assist in understanding why your GPS/GNSS isn't working. Supports dual-frequency* GNSS for: • GPS (USA Navstar) (L1, L2, L3, L4, L5) • Galileo (European Union) (E1, E5, E5a, E5b, E6) • GLONASS (Russia) (L1, L2, L3, L5) • QZSS (Japan) (L1, L2, L5, L6) • BeiDou/COM