GPS Analyzer

GPS Analyzer is a precision GNSS toolkit for surveyors, hikers, drone pilots, geocachers, and anyone who needs to know exactly where they are and what satellites they're seeing. Read every detail the Android FusedLocationProvider and GnssStatus APIs expose — fully on-device, no accounts, no servers, no INTERNET permission requested.

LIVE FIX INTELLIGENCE

The home screen shows your latitude / longitude / altitude / accuracy / fix type / speed / bearing / source, all updated as fast as the OS will hand them over. See the timestamp of every fix, your motion vector, and a constellation breakdown (GPS, GLONASS, Galileo, BeiDou) — visible vs used-in-fix per constellation, with average C/N₀.

POLAR SKY PLOT

The Sky Plot tool renders every visible satellite on a polar chart — elevation as concentric rings, azimuth as the angle. Solid dots are satellites used in your fix; outlines are visible-but-unused. Colour-coded by constellation. Below the plot, a per-satellite C/N₀ bar chart shows signal strength for every SV in view, sorted strongest to weakest.

COORDINATE CONVERTER

Convert your current GPS fix to four formats with one tap each: decimal degrees, degrees / minutes / seconds, UTM (Universal Transverse Mercator), and Geohash. Copy any format to your clipboard for use elsewhere. All math runs on-device — no API calls.

LIVE SPEEDOMETER

Watch your speed in km/h or mph on a circular dial with a heading mini-compass and altitude + accuracy readout. Driven by the same FusedLocationProvider stream as the live fix.

PRIVACY-FIRST, FULLY ON-DEVICE

No accounts, no telemetry, no analytics SDK, no cloud sync, and no crash reporting in this release. The app does not request the INTERNET permission — your location is computed by your phone's GPS hardware and never transmitted anywhere.

WHY THIS APP IS DIFFERENT

• Built natively in Kotlin with Jetpack Compose — fast, fluid Android 13+ UI
• Reads the raw GnssStatus API, not an abstraction — gets you fields most location apps don't show
• Per-permission justifications published in the privacy policy
• Landscape and portrait layouts are responsive on every screen, including the polar sky plot
• Beautiful Tempo design system — Plus Jakarta Sans typography, careful colour, real attention to type and spacing

PART OF THE SPECTRUMIQ FAMILY

SpectrumIQ also publishes:
• Wi-Fi Analyzer — scan, channel analyzer, distance radar, coverage logger
• 5G Analyzer — carrier, cell, SIM info, RSRP / RSRQ / SINR, drive-test heatmap
• BLE Analyzer — BLE + classic Bluetooth scan, offline OUI vendor lookup
• Smart Compass — true-north dial, bubble level, sun position, AR camera tools

Each ships separately on Play Store. They share a codebase and the same privacy guarantees.

PERMISSIONS REQUESTED

• Precise location (ACCESS_FINE_LOCATION) — the entire purpose of the app. Read live, displayed on-screen, never transmitted off the device.

This app does NOT request the INTERNET permission. Full per-permission disclosure: https://quiresystems.com/privacy-policy

Made by Quire Systems. Feedback welcome at support@quiresystems.com.