SW Maps vs LetsGeo

SW Maps is a free GIS and mobile mapping app for collecting, presenting and sharing geographic information. Whether you are conducting a full scale GNSS survey with high precision instruments, need to collect large amount of location based data using nothing but your phone, or just need to view a few shapefiles with labels over a background map on the go, SW Maps has it all covered. Record points, lines, polygons and even photos and have them displayed over your choice of background map, and attach custom attribute data to any feature. Attribute types include text, numbers, an option from a predefined set of choices, photos, audio clips and videos. Conduct high accuracy GPS surveys using external RTK capable receivers over Bluetooth LE. Draw features on the map by adding markers, and measure distance and area. Reuse the layers and attributes of a previous project for another survey, or create templates and share them with other users. Share the collected data with other users as Geopackages, KMZ or shapefiles, or export them to your device storage. Also share and export recorded data as Spreadsheets or CSV files. All data is recorded and exported in the standard WGS84 Geographic coordinate system (EPSG:4326). Features -Online Base maps: Apple Maps or Open Street Map -Support for multiple mbtiles and KML overlays -Shapefile and Geopackage layers, with attribute categorized styling. View shapefiles in any coordinate system supported by the PROJ.4 library. -Add multiple online WMTS, TMS, XYZ or WMS layers and cache tiles for offline use. -Connect to external GPS receivers using Bluetooth for high accuracy surveying using RTK with built-in NTRIP client. Also record data from external receiver for post processing. -Define multiple number of feature layers, each with a set of custom attributes Feature Types: Point, Line, Polygon Attribute Types:Text, Numeric, Drop down Options, Photos, Audio, Video Save as Template for re-use or sharing -Record GPS tracks, with distance measurement -Label features based on attribute values. -Import feature layers from templates or existing projects. -Share or export collected data as KMZ (with embedded photographs) , shapefiles, GeoJSON, Geopackage (GPKG), XLS/ODS spreadsheets or csv files. -Share templates or projects with other users -Supports use of GTX geoid files. To use custom geoids, prepare a GTX file with offsets in meters from WGS84. This product is made in Nepal and is FREE (no Ads). If you find this useful, please let your friends know that you have used a product from Nepal. Spare sometime to visit this wonderful country and know the Nepali people.

Let’sGeo - Professional Geological Field Logging App Let’sGeo is an offline-first app for geological and geotechnical logging, drilling and mineral exploration. Designed for fieldwork and core sheds, it combines geological observations, structural measurements, drilling data and mapping. Works fully offline, with optional upload to your own servers. Key Features Geological & structural logging - Field points: lithology, mineralization, alteration and weathering - Geological codes and free-text descriptions - Compass and clinometer for dip and dip direction - Bedding, joints, faults, shear zones and veins - Vein thickness, mineralogy and density - Schmidt & Wulff stereonets Drilling & sampling - Drillhole runs and recovery tracking - Interval sampling with metadata - Geological samples linked to logging intervals Geotechnical logging - Single structural records linked to depth - Interval-based geotechnical domains - Core recovery, SCR and RQD - Rock mass parameters and fracture angle classes - Core boxes with depth-linked photos Mapping & GIS - GPS points and drillholes - WGS-84, UTM and Gauss-Krüger coordinates - GPS tracks and accuracy recording - Custom markers, colors and visibility controls - Compass-oriented maps with live azimuth - Distance and true bearing to points and drillholes - KMZ layers with drawing and editing tools - KMZ layer ordering and management - Offline satellite imagery - Spectral maps for mineral exploration - SWIR lithology, clay alteration and iron oxide composites - Download spectral scenes for offline interpretation Reference Collection - Project-based geological reference collections - Rock photos, descriptions and geological notes - Import and export between projects and devices - Reference image similarity search - Compare field photos with reference samples - Find similar rocks using image analysis of color, grain characteristics, textures and veins Media & data - Photos, video and audio linked to observations - Geological field sketch sheets - Photo annotation and markup - Local offline data storage - Full project export and import - Project Database Archive export - Merge archives from multiple devices - Cross-platform exchange between Android and iOS Connect DB - Your Own Server - Direct project upload to your PostgreSQL database - Optional S3-compatible storage for media - Use your own company or project infrastructure - Multiple geologists can upload to one shared project - Incremental upload: add new and update changed records - Unchanged records are skipped - Existing server data is preserved - Manual, one-way upload without automatic downloads - No developer-operated cloud required Privacy & Data Control Let’sGeo works offline and stores project data locally. Connect DB optionally uploads data directly to your own PostgreSQL database and S3-compatible storage. No developer-operated cloud is required. Your data. Your infrastructure. Your control. Privacy Policy: https://letsgeo.world/privacy.php Terms of Use (EULA): https://letsgeo.world/terms.php