Record and analyze positioning data from QZSS-supported receivers. View satellite radar, signal strength, and current location on a map. Import logs to review past data and receive disaster management reports.
4.0.0
March 18, 2026
-iOS 26 compatible -DC Report notification sound mute feature has been added.
GNSS Analyzer is a utility app that allows you to record and analyze positioning data from QZSS-supported receivers. It provides features like a satellite radar, signal strength display, and map visualization of your current location.
Yes, GNSS Analyzer requires a QZSS supported receiver. Information on how to lease a free receiver is available on the qzss.go.jp website.
Yes, you can import recorded NMEA log files into GNSS Analyzer. This allows you to display the satellite radar, signal level, and map position for the time you select from the log.
DC Reports are messages from QZSS related to Satellite Report for Disaster and Crisis Management. GNSS Analyzer allows you to view these reports and filter them by current location or display language (English or Japanese).
You can share your recorded NMEA log files directly from GNSS Analyzer via email, making it easy to transfer your positioning data to others or for backup purposes.
GNSS Analyzer is supported on iPhone, iPad, and iPod. It requires iOS 14 or later.
The latest version of GNSS Analyzer is 4.0.0, last updated on March 18, 2026. The app was initially released on October 12, 2015.
GNSS Analyzer has a rating of 1.0 stars from 1 rating. This indicates a very limited number of user reviews available.
