GeoShift vs survAIor

Convert coordinates between 600+ systems — UTM, US State Plane, national grids and latitude/longitude — right on your iPhone, with no internet. Then take them to the field with GNSS survey, stakeout, maps and Live Layers for your team. GeoShift is a geodesy toolkit for land surveyors, civil engineers, GIS users and field crews. It picks your country's national system automatically, and "Convert My Location" shows your position in any system with one tap. ► COORDINATE CONVERTER • 600+ EPSG systems: WGS84, all UTM zones, US State Plane (NAD83, in each state's official unit: US survey feet, international feet or meters), NAD83 UTM, NAD27, NAD83(CSRS) and MTM, ETRS89, ED50, British National Grid, Lambert-93, GDA2020 MGA, JGD2011, SIRGAS, CGCS2000, Pulkovo 1942 and many more • Official NTv2 grids for Germany, France, the Netherlands, Great Britain, Spain, Canada, Australia and New Zealand • See the EPSG transformation code and its accuracy for every conversion • Search by name, EPSG code or country; pick a point on the map • DMS ↔ decimal degrees, QR sharing and PDF reports ► GNSS SURVEY (PRO) • Multi-epoch averaging with outlier rejection (MAD) and Kalman filtering • Quality metrics: horizontal standard deviation, 2DRMS (~95%), CEP50 and convergence • Site calibration to local coordinates (Helmert, residuals and RMS) ► STAKEOUT + AR (PRO) • Navigate to target points with compass, map, distance and bearing • Augmented reality: target arrow and distance on the camera view • True north with the WMM2025 magnetic model ► LIVE LAYERS • Work on the same map with your crew: pins, lines and areas sync within seconds • Invite by link or code as editor or viewer; changes made offline are sent when you reconnect • Creating a layer and inviting require PRO; joining is free (sign-in required) ► MAP, DRAWING & EARTHWORK • Measure distance and area; draw points, lines and polygons; move, rotate and undo • Elevation profile and cut/fill volumes (PRO) • Standard, satellite and terrain maps; HD satellite imagery (PRO) • Download map regions for offline use ► FILES • Open KML/KMZ with their folders, styles and labels, plus GPX, GeoJSON, Shapefile (.zip), DXF, CSV, Excel (.xlsx), LandXML and GML — even files with thousands of points • Export to PDF, DXF, KML/KMZ, GPX, GeoJSON, Shapefile, CSV, LandXML and NCN • Batch conversion of CSV/TXT/NCN files (PRO) ► MORE TOOLS • COGO: inverse, forward, intersection and area • Grid ↔ Ground scale factor • GeoCamera: photos and videos with a GPS + UTM watermark • Track recording with distance and speed (PRO) • Cloud sync across your devices • App languages: English, Turkish, Spanish, French, Hindi and Simplified Chinese Features marked (PRO) require GeoShift PRO; everything else is free. Position accuracy depends on your device's GPS and on site conditions. — Subscription info — GeoShift PRO is offered as a monthly or yearly auto-renewing subscription, or as a one-time lifetime purchase. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; renewal is charged within the 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Terms of Use: https://tclabs.app/geoshift/terms-en.html Privacy Policy: https://tclabs.app/geoshift/privacy-en.html Support: geoshift@tclabs.app

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.