GNSS Master

In-app purchases
4.0
60 reviews
10K+
Downloads
Content rating
Everyone
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About this app

GNSS Master app allows you to:
1) Connect to your external GNSS receiver via USB Serial (OTG), Bluetooth, BLE and TCP/IP
2) Send corrections to your GNSS receiver from in-built NTRIP Client (V1 & V2), and PointPerfect
3) Output your GNSS receiver data to NTRIP Server (V1/V2), TCP Client or TCP Server
4) Use high accuracy position from your receiver directly with SW Maps, and with all other Android apps via Mock Location
5) Change your u-blox/Septentrio receiver configuration to Rover, Base or load any custom configuration file
Updated on
Oct 10, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.0
55 reviews
R M
October 8, 2025
I can connect to NTRIP and external GNSS devices great. The only problem is that I believe the app is intended to allow re-serving NTRIP (eg, an NTRIP Proxy). However, the "Receiver Data Output" which appears to provide that capability, doesn't function in that manner. If I'm wrong, please post details to help other users and I'll update my review. Thank you!
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Jerome Roberts
January 27, 2025
Like the way that it works, and how low resource it is however it never seems to get better than a 10ft accuracy. When other GPS app that connects to my generic UBlox GNSS receiver will get down to a 3-ft accuracy. So I use this app to connect to my GNSS receiver, updates frequency then switch to another one for my mock location in order to get that 3 ft accuracy.
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C Chuah
August 9, 2023
not sure why this app does not show up when searching for "USB GPS", i found this app thru google after many days of searching. very pleased with this app. connects quickly and easily to USB GNSS/GPS u-blox m8030 receiver set at 16hz. Stable software, no frills, straight forward gps status presentation/layout without fancy (and often lagging) visual gimmicks. output as mock location accurately, tested with Trackaddict and Racechrono, works well on both. thank you for making this great app!
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What’s new

- Reconnect all button to connect all streams with their previous settings.
- Improved background operation reliability
- Android 16 Compatibility with live notification of fix status
- Correction input from USB Serial