LetsGeo vs Outcrop360

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

Outcrop360: Master the Field Outcrop360 is the definitive field platform that turns your iPhone into a complete technical workstation. Work with tools built for extreme precision, even in the most remote conditions and without an internet connection. Arriving on iOS with a premium experience! Built 100% natively in SwiftUI, Outcrop360 offers a modern, fluid interface with a stunning Liquid Glass design. Enjoy exceptional performance that maximizes your device's capabilities, featuring a global redesign across our core tools (Map, Logs, Scales, and Compass) to boost your productivity. Everything you need, unified in a single app: 1. WORKSPACES & PROJECTS - Workspaces: Organize multiple projects in dedicated environments (personal or team) with automatic cloud sync. - Roles & Access: Invite colleagues by email, assign roles, and control permissions with precision. - Local & Cloud Projects: Work offline and sync when you're back in range. 2. ADVANCED GIS, 3D MAPS & TRACKS - Offline & 3D Navigation: Download maps for offline use, switch between digital elevation models (2D/3D), and navigate smoothly. - GPS Track Recording: Record your routes in the background to document your path uninterrupted. - Design & Measurement Tools: Draw waypoints, lines, and polygons. Calculate distances and areas in real time. - Topographic Profiles & Export: Build elevation profiles exportable to CSV, image, PDF, or DXF. Share KMZ data and generate map captures in PDF or image with a UTM grid and legend. - Real-Time Crew: Share your location temporarily and monitor your team moving on the map. 3. PRECISION TOOLS SUITE Utilities: - Digital Field Notebook: Create modular notes with text, tables, and images, and export reports to PDF or editable HTML. - Stamped Technical Camera: Capture photos and videos with critical data printed via EXIF and on-screen: UTM coordinates, elevation, date, compass bearing, and notes. - Scales: A physical ruler calibrated to your screen, a scale bar, and a photo scale card exportable at 300 dpi. - Universal Converter: Convert coordinates and over 40 physical units. Measurement: - Logs (Striplogs): Create interval-based records with smart tables, gap and overlap warnings, categories, and color palettes. - AR Angle Meter: Measure angles in augmented reality by adjusting physical vertices. Spatial Orientation: - Compass & Stereonets: Measure Azimuth and Dip with Wulff, Schmidt, density contour, and rosette visualizations, and export structural reports to PDF. 4. FIELD LABS — SPECIALIZED MODULES - MineLog (Drilling): Manage the full cycle of a drilling campaign: planning, daily drilling report (DDR), survey, core boxes, logging, and QAQC sampling. 5. OUTCROP AI — INTELLIGENT TECHNICAL ASSISTANT - "Today in Outcrop AI": Every day, discover a newly recommended technical article on geosciences and engineering. - Natural-Language Technical Queries: Get precise answers for field challenges. - Writing Assistant: Improve your field notes and log descriptions. 6. RESOURCE LIBRARY & COMMUNITY - Weekly Featured Content: Explore the best resources of the week, plus complete petrological and mineralogical data sheets. - Achievement System: Document findings, earn badges, and climb the global and weekly rankings. Who is Outcrop360 for? Built for technical efficiency: Geoscience and Engineering professionals (Civil, Mining, Petroleum, Environmental, Surveying), Hydrogeology, Archaeology, and/or explorers who need precision where others only see a map. Outcrop360 unifies the engineer's work, the scientist's rigor, and the explorer's passion. Download it and master the field! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/