Reviews of GNSS Master

By: EPS Works SL App

List of user reviews and ratings for GNSS Master

Total ratings

3.50 (Rating count: 78)

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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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User Reviews

Recent rating average: 3.60

All time rating average: 3.50

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27% (3)

Date	Author	Comment
2025-01-27	Je*****	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.
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.
2025-01-19	sa*****	amazing! just what I wanted. simply soldered serial to USB adapter to M10Q and used OTG adapter. works and i could even change the refresh rate.
amazing! just what I wanted. simply soldered serial to USB adapter to M10Q and used OTG adapter. works and i could even change the refresh rate.
2024-10-15	A *****	The obvious choice for RTK / RTCM corrections / mock location from external devices. Lightweight and reliable with all needed features and no clutter.
The obvious choice for RTK / RTCM corrections / mock location from external devices. Lightweight and reliable with all needed features and no clutter.
2024-08-19	Pa*****	Unfortunately does not work with Qstarz BL-818GT. It does connect to the dongle, but with 0 B/s data transfer. :-(
Unfortunately does not work with Qstarz BL-818GT. It does connect to the dongle, but with 0 B/s data transfer. :-(
2024-03-12	fr*****	I paired a bluetooth device from system settings. But GNSS master cannot see it. I tried other location software and it works. It will be good if the bluetooth problem can be solved.
I paired a bluetooth device from system settings. But GNSS master cannot see it. I tried other location software and it works. It will be good if the bluetooth problem can be solved.
2024-02-26	Jo*****	Average experiance with using this over swmaps internal caster as its not any good at reconnecting, swmaps will keep trying to server in bad mobile coverage but gnss master gives up and you need to enter the screen and disconnect and reconnect even when mobile reception has returned. i hope at some poiint we can adjust the retries in a field so it can be fixed.
Average experiance with using this over swmaps internal caster as its not any good at reconnecting, swmaps will keep trying to server in bad mobile coverage but gnss master gives up and you need to enter the screen and disconnect and reconnect even when mobile reception has returned. i hope at some poiint we can adjust the retries in a field so it can be fixed.
2024-01-14	So*****	useless app, sorry but what you can do with this app?
useless app, sorry but what you can do with this app?
2023-08-09	C *****	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!
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!
2023-07-11	an*****	Stay DGPS despite BT & NTRIP connected..... Sorry finally works by setting V1 instead of V2 for NTRIP. Get RTK fixed OK now. But no orthometric alt . Used sats=0 HDOP VDOP =0
Stay DGPS despite BT & NTRIP connected..... Sorry finally works by setting V1 instead of V2 for NTRIP. Get RTK fixed OK now. But no orthometric alt . Used sats=0 HDOP VDOP =0
2023-05-17	Se*****	Finally a supported RTK App! Works like a charm. Only bug I've found is that after the first start, the permissions were requested (and granted) but the app showed an error that permissions were not correct and only showed an empty screen. After completely closing and reopening it, everything worked.
Finally a supported RTK App! Works like a charm. Only bug I've found is that after the first start, the permissions were requested (and granted) but the app showed an error that permissions were not correct and only showed an empty screen. After completely closing and reopening it, everything worked.