GeoShift vs survAIor

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

survAIor is a professional surveying calculator designed for engineers, surveyors, and field technicians who need accurate results on-site without carrying a dedicated calculator. SURVEYING CALCULATORS Traverse — Enter a start coordinate and a series of bearing and distance legs. survAIor applies the Bowditch correction and returns adjusted easting/northing coordinates for every station, along with linear misclosure and precision ratio. Area — Calculate the area and perimeter of any polygon by entering coordinate points. Results are returned in both square metres and hectares using the shoelace formula. Curve — Solve horizontal curve elements from any of four input combinations: Δ+R, Δ+T, Δ+L, or R+T. Returns radius, tangent length, arc length, external distance, middle ordinate, long chord, and optional BC/EC chainages. Volume — Compute earthwork cut and fill volumes from cross-sectional areas using the average-end-area method. Returns total cut, total fill, net volume, and a per-interval breakdown. GPS CAPTURE Use your iPhone's GPS to capture survey points in the field. Live coordinates are converted to UTM eastings and northings in real time and displayed on an interactive map. Named points are saved to your device and can be exported as a CSV with full easting, northing, elevation, latitude, longitude, and timestamp columns. PROJECT MANAGEMENT Organise your work into projects. Each project stores its calculations and field notes together, making it easy to manage multiple jobs at once. Return to any saved calculation to view, edit, and re-export results at any time. FIELD NOTES Add titled, free-text field notes to any project — record observations, site conditions, or instructions alongside your calculations. EXPORT Every calculator and the GPS capture tool supports one-tap CSV export via the iOS share sheet, ready for import into Excel, CAD, or GIS software. PRIVACY All data is stored locally on your device. survAIor does not collect analytics, display advertising, or transmit any data over the internet.