GPS Toolkit vs GPS Test Satellite Tracker

GPS Toolkit – GNSS turns your phone into a pro-grade GNSS instrument. Whether you're hiking off-trail, sailing offshore, surveying a job site, or simply curious about the satellites overhead, GPS Toolkit gives you the data professionals need — without the bloat, ads, or accounts. — LIVE GNSS DATA — • Every visible satellite from every constellation: GPS, GLONASS, Galileo, BeiDou, QZSS • Sky plot with azimuth and elevation • Signal-to-noise bars per satellite • Real-time fix quality, HDOP, accuracy — PRECISE POSITION — • Five coordinate formats: Decimal Degrees, DMS, DDM, UTM, MGRS • Altitude (GNSS + barometer when available) • Speed, course, magnetic heading • Configurable units: metric, imperial, or nautical — MAPS & TRACKS — • OpenStreetMap with tile caching for limited connectivity • Record tracks with one tap, in foreground or background • Import and export GPX (industry standard, compatible with every GPS tool) • Waypoints with categories and custom labels — NAVIGATION — • Bearing and distance to any waypoint • Proximity alerts with configurable threshold and sound • True magnetic compass, GPS-independent — TOOLS THE PROS USE — • Geodesic calculator: Vincenty-precision distance, midpoint, projection • Background tracking continues with the screen off • Live Activities on the Lock Screen and Dynamic Island • Available in English, French, Spanish, German, Italian, Portuguese, Dutch, Japanese — PRIVACY FIRST — • Everything stays on your device • No account, no sign-up, no tracking • No ads, no in-app purchases • Built on open, audited geodesic libraries Built by an outdoor user who got tired of bloated GPS apps. If you want the GNSS Swiss Army knife on your smartphone, this is it. Note: GNSS accuracy depends on your device's hardware, sky visibility, and environment. Indoor use and dense urban canyons will degrade fix quality on any GPS app.

GPS Test Satellite Tracker combines a live satellite radar with a real GPS/GNSS status screen and a GPS accuracy test. RADAR Track Starlink, the ISS, navigation satellites, communication satellites and other orbital objects on a compass radar, positioned relative to your location. Satellite positions are predicted from public orbital data (TLE) using the SGP4 model. GPS / GNSS STATUS See your device's real GPS fix from iOS — position, altitude, speed and location accuracy. Alongside it, view the navigation satellites (GPS, Galileo, GLONASS, BeiDou, QZSS, SBAS and NavIC) calculated to be above your horizon, split into "in use" and "in view," with signal estimated from elevation. Because iOS does not expose the receiver's raw satellite list, the satellite view is computed from orbit data — while your position and accuracy are the device's real values. ACCURACY TEST Leave your device still for 1, 5 or 10 minutes and see how steady its position really is. Every fix is plotted on a scatter chart with CEP50 and CEP95 circles, alongside RMS, 2DRMS, maximum drift and height statistics. Measure against the session average or against a known coordinate, and compare the accuracy iOS reports with the scatter actually measured. The test uses iOS system positioning (Core Location), not raw GNSS measurements. FEATURES - Live satellite radar for Starlink, ISS and orbital objects - Real GPS fix quality, accuracy and location data - GNSS satellites overhead: in use vs in view - Stationary GPS accuracy test with CEP50 / CEP95 and scatter plot - Full orbit track and telemetry for any satellite - Signal indicators, NORAD IDs, footprint, altitude and more Terms of Use (EULA): https://developer-barseghyan.github.io/satellite-tracker-support/terms Privacy Policy: https://developer-barseghyan.github.io/satellite-tracker-support/privacy