GPS Test Satellite Tracker
Starlink, ISS, GNSS & Orbit
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
New: Accuracy test. Leave your iPhone still and see how stable your GPS really is, with CEP50/CEP95 and a live position scatter plot.
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
New: Accuracy tab
- Stationary GPS test: leave your device still for 1, 5 or 10 minutes
- Position scatter plot with CEP50 and CEP95 circles
- CEP50 / CEP68 / CEP95, RMS, 2DRMS, max drift and height statistics
- Measure against the session average, your current fix, or a known coordinate
- Compare the accuracy iOS reports with the scatter actually measured
The developer, Tigran Barseghyan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tigran Barseghyan
- Size
- 7.3 MB
- Category
- Navigation
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Monthly $8.99
- Pro Lifetime $49.99
- Pro Annual $39.99
- Copyright
- © 2026 Tigran Barseghyan