Experience Satellite Scanner: GPS Stars from Unelma Studios, an Android utility for monitoring satellite signals and mapping the sky. It offers real-time visualization of GPS, GLONASS, Galileo and BeiDou constellations, displays precise latitude, longitude, altitude and speed, and provides SNR diagnostics for each visible satellite. Additionally the app includes a live sky view, integrated star map, compass tools, and offline basic tracking using device hardware. It targets hikers, drone pilots, geocachers and stargazers needing on-device GNSS diagnostics and celestial identification in the field.

What does the app track and display?

Satellite Scanner combines GNSS analysis with an astronomy map. The app tracks GPS, GLONASS, Galileo and BeiDou constellations in real time and presents position details such as latitude, longitude, altitude and speed alongside per-satellite SNR diagnostics. A live sky view overlays man-made satellites with stars and constellations, so users see orbital visibility and celestial reference in the same view, which suits both troubleshooting and night-sky observation.

Does it affect device resources during tracking?

Unelma designed the app as a lightweight utility focused on providing accurate real-time orbital data. Basic satellite tracking works offline using the device's hardware sensors, which keeps network usage low while acquiring fixes. Map rendering and periodic updates may use data when available, and the stated minimum requirement of Android 5.0 or later supports a broad range of field-capable devices during hikes or drone flights.

Is offline operation and data handling practical for field use?

The app performs core GNSS reads with local hardware sensors, so basic tracking and coordinate display operate without an internet connection. Map tiles and certain updates do require a data connection, meaning full visual maps depend on connectivity. Per-satellite SNR diagnostics are available from on-device reads, which helps identify local reception issues without relying on remote services for basic diagnostics.

Do I need technical knowledge to interpret diagnostics and maps?

The app exposes detailed GNSS signal diagnostics including SNR for each satellite, which benefits drone pilots and geocachers troubleshooting weak satellite fixes. Interpreting SNR trends and orbital visibility requires some familiarity with GNSS concepts; casual users can still use the live sky view and compass for orientation, while more technical users gain actionable diagnostic readings for signal troubleshooting.

Practical recommendation and single key caveat

Satellite Scanner is a practical choice for outdoor users who need on-device GNSS visibility paired with a star map. Its strength is combining local satellite diagnostics with a celestial reference. The main caveat is that making the most of SNR readings and orbital data requires some GNSS knowledge. Tip: gather fixes in open-sky conditions and allow brief calibrations outdoors before critical tasks.