ROLAVIScan vs OpenSurvey3D

ROLAVIScan is a professional field application for GNSS surveying, RTK positioning, LiDAR scanning, augmented reality, terrestrial photogrammetry and geospatial project management on iPhone and iPad. Built for surveyors, engineers, construction professionals, geodesists and field teams, ROLAVIScan brings capture, stakeout, measurement, reconstruction and visualization tools into one mobile workflow. GNSS AND RTK • Connect supported ROLAVI, SparkPNT TX2, DataGNSS NANO RTK and UM980 Bluetooth receivers • Use NTRIP corrections for RTK positioning • Connect external NMEA sources through TCP • Use iPhone GPS as an approximate SINGLE-position source • View solution status, satellites used and visible, skyplot, signal bars, HDOP, VDOP, correction age and accuracy • Record raw GNSS data with supported ROLAVI receivers SURVEYING • Capture survey points with names, codes and instrument height • Perform point stakeout and review distances and direction • Apply geoid models and Grid Shift corrections • Import and export CSV survey data • Display DXF, KML, KMZ, SHP ZIP and WMS layers • Work with LandXML terrain surfaces and georeferenced raster data • Organize survey points, photos, point clouds and exports by project LIDAR AND POINT CLOUDS • Capture color point clouds and mesh data on compatible LiDAR devices • Preview, process and manage field scans • Export professional point-cloud and 3D formats for further processing AUGMENTED REALITY • Visualize and stake out georeferenced points in AR • Measure AR points, polylines and polygons • Place ROLAVIAR models • Create and inspect AR pipelines and AR polygons • Use shared GNSS/AR calibration for geospatial visualization PHOTOGRAMMETRY AND 3D • Capture georeferenced photo sets • Process on-device photogrammetry projects • Preview and export reconstructed models, including USDZ workflows • Generate georeferenced 3D Gaussian Splatting projects • Export Gaussian models and colored LAS point clouds ROLAVISCAN PRO ROLAVIScan Pro is a single auto-renewable subscription that unlocks the complete compatible workflow, including supported non-ROLAVI Bluetooth receivers, iPhone GPS, TCP NMEA, Surveying, AR, Camera–LiDAR, Photogrammetry and 3D Gaussian Splatting. Monthly and annual plans are available. The subscription title, duration, included services and localized price are displayed before purchase. Payment is charged to your Apple Account after confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in Apple Account settings. Restore Purchases is available inside the app. Some functions require compatible GNSS hardware, a LiDAR-equipped Apple device, internet access for NTRIP or sufficient device storage and processing capacity. Privacy Policy: https://rolavignss.github.io/rolaviscan-privacy/ Terms of Use — Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

OpenSurvey3D is a survey-grade field app that starts with the GPS already in your pocket and scales to centimeter accuracy when you connect a GNSS receiver. No account, no subscription, no data held hostage. WALK UP AND COLLECT Tap Collect, pick what you're recording, and it's on the map. Points for markers, control points, utility poles, manholes, valves, hydrants, signs and trees. Boundary lines, fence lines and paths. Parcels, fields and building footprints, with length and acreage updating as you walk the perimeter. MEASUREMENTS YOU CAN DEFEND Every position carries its own audit trail: which source produced it, the fix type, horizontal and vertical accuracy, how many samples were averaged, and when it was measured. Hold to average an occupation and watch the RMS spread converge — at a single point, or at every corner of a boundary. CENTIMETER ACCURACY, ANY RECEIVER Connect a GNSS rover that streams NMEA over TCP in Wi-Fi hotspot mode. Accuracy comes from the receiver's own error statistics rather than a guess. The built-in NTRIP client pulls RTCM corrections from a caster and forwards them to the rover, so you can watch a float solution go fixed in the field. DEED COORDINATES IN, DELIVERABLES OUT Import design points from CSV or GeoJSON — latitude and longitude, or raw northing and easting interpreted in your zone. 325 NAD83 State Plane and UTM zones are built in, and the projection engine is validated against PROJ to under a centimeter. Imported points appear as distinct pins and stake out like anything else. STAKE OUT WITH CONFIDENCE Navigate to any asset or imported design point. Live distance and bearing, north and east offsets, a tolerance ring that turns green when you are on it, and an as-staked record saved with its deviation. Multi-corner boundaries step corner by corner. WORKS WHERE THE WORK IS Download the map for your job site and keep working with no signal. Projects, photos and positions all live on the device, and each project keeps its own coordinate system. EXPORTS THAT ARE NOT A PAYWALL CSV with one row per vertex, including projected easting and northing when a zone is set. GeoJSON with true point, line and polygon geometry. Or one ZIP containing the data and every photo, ready to hand to a client. OPEN SOURCE OpenSurvey3D is MIT licensed and developed in the open. Read the code, file an issue, or build your own. Centimeter accuracy requires a compatible GNSS receiver and a correction source, neither of which is included. Accuracy from the phone alone is typically 3 to 5 meters.