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GPSTest Build Status Donate Twitter Follow

The #1 open-source global navigation satellite system (GNSS) testing app

Get it on Google Play Get it on F-Droid

It supports dual-frequency¹ GNSS for:

  • GPS (USA Navstar)
  • GLONASS (Russia)
  • QZSS (Japan)
  • BeiDou/COMPASS (China)
  • Galileo (European Union)
  • IRNSS/NavIC (India)
  • Various satellite-based augmentation systems (SBAS):
    • Wide Area Augmentation System (WAAS) (USA)
    • European Geostationary Navigation Overlay Service (EGNOS) (European Union)
    • GPS-aided GEO augmented navigation (GAGAN) (India)
    • Multi-functional Satellite Augmentation System (MSAS) (Japan)
    • System for Differential Corrections and Monitoring (SDCM) (Russia)
    • Satellite Navigation Augmentation System (SNAS) (China)
    • Soluciόn de Aumentaciόn para Caribe, Centro y Sudamérica (SACCSA) (ICAO)

¹Dual-frequency GNSS requires device hardware support and Android 8.0 Oreo or higher. See Dual-frequency GNSS on Android for more details.

Questions? Check out the FAQ, the Slack group, and Google Group.

Beta Testing

Get early access to new GPSTest versions, and help us squash bugs! See the Testing Guide for details.

Data Output and Logging

Want to know how to output GNSS data to the system log for further analysis? Check out the Data Output and Logging page.

Accuracy

Measuring your device GNSS accuracy? Check out the Measuring Accuracy using GPSTest page, as well as the corresponding article Measuring GNSS accuracy on Android devices.

Crowdsourcing GNSS data

Interested in better understanding the state of GNSS feature support on Android devices? See the article Crowdsourcing GNSS features of Android devices.

Donate

GPSTest is free and open-source, and I work on it on my lunch breaks as a side project! If you'd like to support GPSTest, please consider buying me a coffee.

Donate by buying me a coffee

License

GPSTest is licensed under Apache v2.0

Building the project

You can open and build this project using Android Studio. For more details, see the Build documentation.

Contributing

I welcome contributions to the project! Please see the Contributing Guide for details, including Code Style Guidelines and Template.

Don't know where to start? Take a look at the issues marked with the your-first-pr label and comment to let me know if you're interested in working on it.

Translations

Want to improve existing translations, or add a new translation? See the Translations documentation.

Trusted by industry experts

Notable appearances of GPSTest: