# GnssLogger App

> A handy tool to analyze, visualize and log Android location and sensor data!

Canonical page: [https://chrome-stats.com/d/com.google.android.apps.location.gps.gnsslogger](https://chrome-stats.com/d/com.google.android.apps.location.gps.gnsslogger)

## Overview

- **ID:** `com.google.android.apps.location.gps.gnsslogger`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Developed with Google
- **Category:** TOOLS
- **Downloads:** 87,083
- **Rating:** 4.39 / 5 (404 ratings)
- **Version:** v3.1.1.2
- **Last updated:** 2026-05-06
- **First published:** 2020-11-19
- **Publisher country:** US
- **Size:** 17 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.google.android.apps.location.gps.gnsslogger)
- **Privacy policy:** [http://www.google.com/policies/privacy](http://www.google.com/policies/privacy)

## Description

GnssLogger App by Google provides powerful tools for analyzing, visualizing, and logging Android location and sensor data, including GPS, network location, and raw GNSS measurements. Designed for phones and Wear OS watches, the app offers multiple tabs such as Home (to control data logging), Log (to manage and view logged data), Map (to visualize locations on Google Maps), Plots (signal and residual plots), Status (detailed GNSS satellite info), Skyplot (satellite visualization), AGNSS (Assist-GNSS experiments), and WLS Analysis (position and velocity computations).

For Wear OS 3.0+ watches, it enables real-time GNSS status monitoring and recording data to CSV and RINEX formats. This tool is ideal for developers, researchers, and advanced users needing in-depth data on location and GNSS sensor performance on Android devices.

## Rankings

- #235,517 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_LOCATION_EXTRA_COMMANDS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACTIVITY_RECOGNITION`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_LOCATION`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `com.google.android.apps.location.gps.gnsslogger.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.gms.permission.ACTIVITY_RECOGNITION`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`
- `com.google.android.providers.gsf.permission.WRITE_GSERVICES`

## Review summary

GnssLogger App is praised for providing detailed raw GNSS and sensor data useful for analysis, with features like RINEX format and timed logging. However, users report frequent freezing and stability issues during prolonged logging, difficulties exporting complete RINEX files, missing measurement types, and occasional UI and performance problems on some devices. Developer support is active, addressing some concerns based on user feedback.

### Pros

- Provides access to detailed raw GNSS data including measurements and RINEX format, which is valuable for GNSS analysis and research.
- Supports timed and configurable data logging, helpful for continuous data collection.
- Enables logging of sensor data alongside GNSS measurements, pleasing users interested in multi-sensor data.
- Free and transparent data access aligns with enthusiasts and researchers wanting full data visibility.
- Active developer responsiveness addressing user feedback and bugs.

### Cons

- Application has issues with data logging stability such as freezing after extended periods (about an hour or two) and then resuming unexpectedly.
- Problems with exporting or generating complete RINEX files, often resulting in files with only satellite IDs and lacking observations.
- User interface problems including difficulty in exporting data, accidental touches causing loss of settings, and inability to reset certain settings even after reinstalling the app.
- Certain measurement types like pseudorange or navigation messages are missing or not accessible in the output files.
- Performance issues on some devices, such as slowing, freezing, or high CPU usage especially during sensor + RINEX logging.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.google.android.apps.location.gps.gnsslogger)