Geo++ RINEX Logger

GEO++
[ Link to Google Play ] :

Overview – Geo++ RINEX Logger uses the most recent Android API services to log your device’s raw GNSS measurement data into a RINEX file including pseudoranges, carrier phases, doppler frequencies and noise values. So far, it supports GPS, GLONASS, Galileo, BDS and has been successfully tested on these devices: HTC Nexus 9, Huawei Mate P10, Samsung Galaxy S8 (European version).
Carrier phase ambiguities have been successfully solved for GPS and GLONASS on each of these devices as long as there was no duty cycling performed by the GNSS chip (The cycle slip indicator flags next to the carrier phase values in the RINEX file will be set to 1 when duty cycling is on). At this time, the only device we know which is capable of disabling the duty cycling is the HTC Nexus 9 running with Android 7.1.