Let’sGeo — professional geological field logging app

Let’sGeo is a professional offline field tool for geological and geotechnical logging, drilling operations and mineral exploration.

Designed for real field and core shed work, it combines geological descriptions, structural measurements and drilling data in a single, structured workflow — fully offline.

Key features

Geological & structural logging
• Field points with lithology, mineralization, alteration and weathering
• Standardized geological codes with free-text descriptions
• Built-in compass and clinometer for dip and dip direction
• Structural elements: bedding, joints, faults, shear zones and veins
• Vein parameters: thickness, mineralogy and density
• Stereonet (Schmidt & Wulff) visualization

Geotechnical logging in drillholes
• Two-level workflow:
– Single structural records linked to depth
– Interval-based geotechnical domains
• Core recovery, TCR, SCR and RQD
• Rock mass parameters and fracture angle classes
• Core boxes with depth-linked photo documentation

Drilling & sampling
• Drillhole runs and recovery tracking
• Interval sampling with full metadata

Mapping & GIS
• GPS points and drillholes
• Coordinate input and conversion (WGS-84, UTM, Gauss–Krüger)
• GPS track recording
• KMZ layers with map drawing tools

Media & data
• Photos, video and audio linked to observations
• Offline-first: all data stored locally
• Full project export/import and merge between devices

Privacy
Let’sGeo stores all data locally on your device.
Nothing is uploaded or shared unless you explicitly choose to export it.

Privacy Policy: https://letsgeo.world/privacy.php
Terms of Use (EULA): https://letsgeo.world/terms.php