Local Scale Factor vs GeoShift

For professional surveyors and geodesists who need to know the local scale factor and Cartesian coordinates based on WGS84 GPS positions Hundreds of local grid transformations built in. A full list of available transformations can be found at https://www.nrgsurveys.co.uk/wp-content/uploads/transformations.txt Converts latitude and longitude using local ellipsoid parameters and Helmert 7 step transformations As a bonus it converts local postcodes to geodetic positions and vice versa Open Maps navigation to the selected coordinates (If available)

263 coordinate systems. NTv2 grid accuracy. GNSS survey, stakeout and AR — all fully offline. GeoShift is a professional geodesy toolkit built for surveyors, civil engineers and field crews. From coordinate conversion to field stakeout, cut & fill volumes and cadastral lookup — everything you need in one OFFLINE app. ► COORDINATE CONVERTER - 263 EPSG systems: WGS84, ED50, ITRF, UTM, ETRS89, national grids and more - On-device, no-internet conversion powered by a proj4 engine - 13 embedded NTv2 grids for the highest datum accuracy - Helmert 7-/3-parameter and epoch (plate-motion) propagation - Ellipsoidal ↔ orthometric height with geoid model - Batch convert: import CSV/TXT/NCN/XYZ and transform at once ► GNSS SURVEY (PRO) - Multi-epoch averaging, inverse-variance weighting, MAD outlier rejection and Kalman filtering - Real quality metrics: horizontal STD, 2DRMS (~95%), CEP50 and convergence - Mock-location rejection, satellite C/N0 and DOP panel ► STAKEOUT + AR (PRO) - Stake out points with compass and live map guidance - Augmented Reality: on-camera target arrow and distance - True north via WMM2025 magnetic declination ► MAPS, TOPOGRAPHY & EARTHWORK - Distance/area measurement, polygon-line drawing, shape move/rotate - Elevation profile and cut/fill volume analysis from DEM - Standard, satellite and terrain layers + offline map downloads ► GEODETIC TOOLS - COGO (inverse, forward, intersection, area) - Grid ↔ Ground scale factor - Site calibration (Helmert, residuals and RMS) ► GEO-TAGGED CAMERA & TRACK - GPS + UTM watermark burned into photos and video - Live track recording with distance and speed ► EXPORT & CLOUD - PDF, DXF, KML/KMZ, CSV, NCN, GPX - Firestore cloud sync across devices, 6 languages The core of GeoShift is free. PRO unlocks unlimited saves, GNSS survey, stakeout, batch conversion, tracking and HD satellite maps. Try PRO FREE for 3 DAY — download today and put the field in your pocket. — Subscription Info — Subscriptions are charged to your App Store account and renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Any unused portion of a free trial is forfeited when a subscription is purchased. Terms of Use: https://tclabs.app/geoshift/terms.html Privacy Policy: https://tclabs.app/geoshift/privacy.html