ZephrFix

ZephrFix turns your Android phone into a professional-grade GNSS position source — delivering sub-meter accuracy using cloud correction streams (PPP/DGNSS), with no dedicated hardware needed. Position data streams at up to 10 Hz over TCP or Bluetooth SPP in standard NMEA format, making it a drop-in replacement for expensive GNSS rovers in ArcGIS Field Maps, SW Maps, Mapit GIS, FieldGenius, and any other NMEA-compatible field software.

Free tier uses standard Android location. ZephrFix Pro unlocks corrections and the Zephr PE.