Free GNSS survey tools
Small, sharp tools for the unglamorous end of a survey: fixing data after the correction arrives. Free, no account needed — your files stay on your device.
Survey point shifter
Your base position got corrected after the job — OPUS came back, or you finally surveyed it in. Apply that correction to every point you collected, in one pass.
RINEX position updater
Put the corrected coordinates into your RINEX observation file's header before post-processing, so every downstream tool starts from the right position.
Photo GPS shifter
The base position was corrected after the flight — so every drone photo's geotag is off by the same amount. Shift them all before processing.
RINEX converter
Turn raw receiver logs — u-blox UBX, RTCM, NovAtel, Septentrio, and more — into RINEX for OPUS, PPK, and post-processing.
Running your own base station?
RoboGNSS is a hosted NTRIP caster — stream corrections to your rovers, forward to Onocoy, download RINEX, and watch your base's health live. One base station is free.
Try it free