# GNSS Master

> GNSS RTK Made Easy: Connect, Configure, Apply Corrections and Share

Canonical page: [https://chrome-stats.com/d/com.gnssmaster](https://chrome-stats.com/d/com.gnssmaster)

## Overview

- **ID:** `com.gnssmaster`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** EPS Works SL
- **Category:** TOOLS
- **Downloads:** 27,252
- **Rating:** 3.50 / 5 (80 ratings)
- **Version:** 1.5.0.0
- **Last updated:** 2025-10-10
- **First published:** 2023-04-28
- **Publisher country:** AD
- **Size:** 18 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.gnssmaster)
- **Website:** [https://www.gnssmaster.com/](https://www.gnssmaster.com/)
- **Privacy policy:** [https://www.gnssmaster.com/privacy-policy/](https://www.gnssmaster.com/privacy-policy/)

## Description

GNSS Master is a powerful Chrome extension designed to simplify RTK GNSS operations. It allows users to effortlessly connect their external GNSS receivers through multiple interfaces such as USB Serial (OTG), Bluetooth, BLE, and TCP/IP. With built-in support for NTRIP Client (versions 1 and 2) and PointPerfect, it can seamlessly send correction data to GNSS receivers enhancing positional accuracy.

Additionally, GNSS Master enables output of GNSS receiver data through NTRIP Server, TCP Client, or TCP Server configurations. Users can directly use high-accuracy positions within SW Maps or any other Android app via Mock Location. The extension also allows easy configuration changes for u-blox and Septentrio receivers, including switching between Rover and Base modes or applying custom configuration files. This tool is ideal for professionals requiring precise GNSS data management and improved real-time kinematic positioning.

## Rankings

- #384,572 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_MOCK_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE`
- `android.permission.FOREGROUND_SERVICE_DATA_SYNC`
- `android.permission.FOREGROUND_SERVICE_LOCATION`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.POST_PROMOTED_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.gnssmaster.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users consistently praise GNSS Master as a lightweight, stable, no‑frills app with strong RTK/NTRIP support, reliable USB/OTG connections, high update‑rate options, and accurate mock‑location output. Main recurring problems are Bluetooth pairing/connection failures and occasional compatibility or data/accuracy issues with certain GNSS receivers.

### Pros

- Lightweight, low‑resource and stable with a no‑frills interface
- Supports RTK/RTCM corrections and NTRIP workflows
- Outputs mock location reliably and works with third‑party apps (e.g., TrackAddict, RaceChrono)
- Reliable USB/OTG connections to external GNSS receivers and supports high refresh rates/configurable update frequency (e.g., 16Hz)

### Cons

- Bluetooth device discovery/connection problems — app often does not see or connect to paired BT GNSS receivers
- Compatibility/data issues with some receivers (e.g., 0 B/s, reduced accuracy vs other apps) leading to limited accuracy or no data

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.gnssmaster)