GeoShift vs ESDPS Survey System

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

ESDPS is a professional engineering surveying app for field calculation, road staking, earthwork quantity computation, and project review. Key features: 1. Curve staking: supports straight line staking, circular curves, vertical curves, virtual-focus curves, three-point curves, S-curves, egg-shaped curves, compound curves, comprehensive curves, combined alignments, interchange ramp curves, and full-line layout by intersection points. 2. Basic surveying: supports coordinate forward and inverse calculation, Gauss projection conversion, zone conversion, coordinate transformation, forward intersection, side intersection, resection, area calculation, map sheet calculation, and detail point calculation. 3. Earthwork calculation: supports grid earthwork, TIN earthwork, cross-section earthwork, and contour-based earthwork calculation. 4. Survey adjustment: supports closed traverse, connecting traverse, branch traverse, undefined traverse, closed leveling, connecting leveling, and branch leveling. 5. Topographic and drawing tools: supports contour drawing and DWG/DXF file viewing. 6. Point cloud tools: supports LiDAR point cloud scanning, point cloud processing, and browsing PLY, OBJ, LAS, and other point cloud files. 7. File management: supports local project saving, search, opening, renaming, cloud upload, download, and synchronization. 8. AI assistant: helps query local or cloud project files, explain surveying module parameters, recognize images, tables, and documents, and assist with common engineering surveying questions. ESDPS is designed for engineering surveying, road construction, topographic mapping, earthwork checking, field staking, and project file management. The free version provides basic access, while signed-in users can upgrade in the plan center for cloud, AI, and full-feature access. website:http://www.esdps.cn Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/