LetsGeo vs Lithos

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

An iPad & iPhone App for Geoscientists to Collect, Integrate, Analyse, and Interpret Earth Science Data in an Applied GIS Environment. Our Simple & Smart Process An all digital workflow with an intuitive approach away from classic paper challenges and transcription errors and that integrates seamlessly into your existing systems and workflows. Step 1: Collect Any & All Observations Setup your project first, then observe the outcrop, lab results or other relevant geoscientific data, add a point on the field map, verify the positioning and document the needed information with dedicated records. No need to manually transcribe your rained-on, warped, and/or ripped paper field slips, notes, and sketches in the evening. Step 2: Integrate The Stratigraphy Create one or more stratigraphic columns. The individual units are each linked to the rocktype and contact records of the relevant observations so you can easily identify the reference observations of a unit, validate compatibility and make modifications. Step 3: Analyse & Interpret Your Geospatial Data Continuously analyse your collection of observation data, which is automatically categorised onto dedicated location and observation maps and tables upon entry. This will enable you to develop and modify your interpretation, track your progress and plan ahead. Smarter Technologies, Integrated with Care • Harness On-Device GPS To enhance your experience, device capabilities are leveraged for swift data acquisition, comprehensible visualisation and comprehensive analyses. • Compile & Store Spatial Data Each project has GIS at its core for accurate and reliable spatial data work. The data is stored in a SQLite database of the open GeoPackage format. • Access Cloudless, Hi-Res Satellite Imagery Our maps provide the advantage of seamless layers of cloudless, worldwide, high-resolution satellite imagery. • Access 3D Terrain Data Our maps also provide the advantage of 3D map visualisation, detailed terrain with elevation data, and streets, trails and labels. • Access Base Maps Offline Download regions of Mapbox maps to verify and correct your position, even in ‘dark’ spots where acquiring GPS and cellular signals are a challenge. Dedicated Records Document your observations thoroughly without forgetting any details. Each observation contains selectable and open fill forms to complete as part of a dedicated record keeping system with spatial analysis and quality assurance enhancements. Simple. Efficient. Effective. Additional features and tools you need to document your observations and drive accurate Earth systems understanding. • Manage Your Collection Gather like a squirrel nearing winter and view your data on maps, in tables and as stratigraphic columns. • Turn Complexity Into Insights Have your data automatically categorised onto dedicated location and observation maps. • Sketch & Annotate It Make sketches, annotate photos, and write free-form notes with each observation. • Have Confidence In Your Data Provide a confidence rating with each record type and build a robust dataset. ... And Much More Lithos improves over time as new features are added. Usage of Lithos is covered by the standard Apple End User License Agreement available at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/