Topo Reader vs 3D Mappa

Download all available USGS topographic maps and import Geospatial PDF maps for off-line use at full undistorted resolution. Topo Reader is designed for road trips, camping, hiking, exploration and geographical history. Map images are accurately center aligned regardless of datum and placed on top of Apple's map kit for easy referencing and intuitive touch navigation. This software utilizes the latest capabilities of IOS with a fast start up, map rotating, unbeatable full detail resolution. Map downloads dispatch in the background so you can continue using the app. Topo Reader can install for use 422,664 U.S. Geological Survey current and historical topographical maps describing the topography of every region and island territories of the United States of America. Historical versions date as far back as year 1879. Install a map quad by pressing and holding a point on the reference map and discover the maps available at that location and the unique names given to every quad by the cartographers. Import geospatial PDF maps from the web, AirDrop, Finder, iTunes and email. Even at trailheads there are QRCode for maps that copy and install onto this app! Local and national park services offer PDF maps from their web sites. Even aeronautical sectional maps with embedded geospatial metadata that you can download in installed into Topo Reader. Easy see all your installed maps by zooming out and they all become a colorful violet and partially transparent so you can spot your map. Installed maps are managed in a table format which can be sorted by name, distance, and scale. Multiple versions of the same map can be stacked on top of one another and made visible or hidden using two finger swipes. Planning a hike somewhere and want to know the distance of your jaunt. Download the map and use the dual mode ruler to measure the path distance. Select the create Route option and draw and record your planned route. Purchase a subscription for unlimited map downloading. A subscription stops ads and doesn't auto-renew. The first few map download are complementary.‡ Features: • No need for cellular service to use • Use the GPS on downloaded topo maps while offline* • Dual mode ruler with orthographic line and path measuring • Waypoints with Augmented Reality finder • Routes path creation • Tracks/bread-crumb GPS location recording* • Full app usability while maps download in the background • Displays footprint grid and quad names • Aligns map datums to WGS84 (GPS) coordinates • Dynamic map stitching • Cropping of map margins for one big map grid • Automatic USGS topographic map download for your current location • Uses GPS location service to identify your location on a topo map* • Miles, Feet, Kilometers, Meters, Nautical Miles units • MGRS, UTM, and geodetic latitude and longitude coordinates • Import geospatial PDF maps downloaded from the USGS and other sources in zip or regular file formats • Enter coordinates in decimal, minutes and second formats • Map rotation and orients map to follow your heading • Imports GPX file formats waypoints • Email, AirDrop and SMS text waypoints, tracks and routes as GPX files (one subscription purchase required to permanently enable). Not currently supported: Geo TIFF; OCG layer selection used in current USTopo USGS maps. Not all geospatial metadata formats and datums are supported for imported PDF maps. Limited KML features supported. * Not preloaded with maps. WiFi recommended. Downloading queue does cap at around 36 maps. ** Continued use of GPS running in the background can dramatically decrease battery life. Location feature may not function on iPod and wifi-only iPad devices without GPS hardware. ‡ After a subscription period expires, advertisement may resume from usage of the import features.

3D Mappa revolutionizes the world of GIS for mobile. Designed for professionals and enthusiasts alike, our app puts a powerful suite of terrain analysis tools in the palm of your hand, making complex geospatial tasks effortless and instantaneous. Export data in seconds to industry-standard formats like GeoTIFF, DXF, SHP, GeoJSON, KML, OBJ, glTF, and STL, ensuring seamless compatibility with AutoCAD, QGIS, and ArcGIS. From surveyors and civil engineers to land managers and outdoor enthusiasts, 3D Mappa allows you to visualize and evaluate land features with unparalleled precision. Instantly generate elevation models, analyze slopes, run cut & fill earthwork calculations, and automate site audits using integrated AI. Say goodbye to cumbersome desktop software and hello to streamlined, mobile-first GIS. INTELLIGENT TERRAIN ANALYSIS Visualize and compute terrain metrics through dynamic analytical lenses: • Cut & Fill Earthwork: Calculate precise cut, fill, and net earthwork volumes using reference planes or two-surface comparison. • Terrain Suitability Screening: Filter sites by maximum slope, elevation thresholds, downslope aspect, and contiguous area. • Route & Path Profiling: Measure true terrain-following 3D distance, elevation changes, slope gradients, and closed-polygon plan/surface areas. • Contour Maps: View precise elevation intervals with connecting index lines. • Elevation Heatmaps: Depict height variations through rich, high-contrast color gradients. • Slope & Aspect: Instantly calculate the steepness and compass facing direction of any surface. • Normal & Landform Maps: Analyze surface orientation and detailed geomorphological features. • Flow & Curvature: Visualize drainage patterns and terrain curvature for hydrological assessment. • Cross-Sectioning: Generate interactive 2D elevation profiles along custom waypoint paths. PRO-GRADE MODELING & IMPORT • Data Server Integration: Create high-resolution Digital Elevation Models (DEMs) directly from satellite and terrain servers. • Custom Point Cloud & LiDAR Imports (XYZ, CSV, LAS/LAZ): Bring your own survey data to life with accelerated Delaunay triangulation into interactive 3D meshes. • Live AI Site Audits: Grounded AI insights for land ownership, flood risks, soil characteristics, and zoning constraints. • Client Site Briefs: Compile survey findings, cross-section profiles, and AI insights into clean, shareable PDF documentation. INDUSTRY-STANDARD EXPORTS Move your data from the field to CAD and GIS software in seconds: • GIS Formats: GeoTIFF (Elevation DEM & Georeferenced RGB), SHP, GeoJSON, KML • CAD & 3D Modeling: DXF, STL, glTF, OBJ • High-Resolution Output: Raw coordinate CSVs and high-fidelity textures up to 8K resolution. BUILT FOR SPEED & EFFICIENCY • Real-Time Geospatial Engine: Instant calculations for area, surface area, elevation, and volume. • Location History & Bookmarks: Access past sites and coordinates with a single tap. • Cloud Persistence (Infinite Tier): Securely sync project history and custom data across devices. Experience the future of mobile GIS. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/