GeoStratum
Lithotheque

Lithotheque by GeoStratum

A geological field notebook designed for ownership, speed, and scientific confidence.

Capture, enrich, and preserve geological observations with a workflow engineered for offline reality and controlled AI usage.

Download on Google Play User Manual User Guide (AI) Map Layers Guide Legal Notice (App)

Edge AI Architecture

The 21-Pass Multi-Scale Engine

Standard AI models resize your photo to a single fixed resolution — destroying micro-crystalline detail in the process. Our engine runs 21 parallel inference passes to capture both macroscopic structure and microscopic mineralogy simultaneously.

Dolomitic Limestone sample — Calcaire dolomitique analysé par le moteur 21-Pass de Lithotheque
Calcaire dolomitique — © 2026 Lohan Guyon (Bretteville-sur-Laize, France). Tous droits réservés.
×16
Fine Passes — 4×4 Grid

Micro-details, crystal texture & mineral extraction

×4
Medium Passes — 2×2 Grid

Regional texture & structural features

×1
Global Pass — Full Frame

Overall sample context & shape analysis

Weighted score aggregation → Final class + confidence

104 Geological classes
18.4ms NPU latency (INT4)
14 500+ Training images
100% Offline, on-device

Turn your smartphone into a geological field assistant.

Lithotheque is the professional application designed for geologists, Earth science students, paleontologists, and mineralogy enthusiasts. Replace your paper notebook, compass, and maps with a complete, secure, fully offline digital solution.

CORE FEATURES:

Mapping & Geolocation

  • Specialized basemaps: Access global geological maps (Macrostrat) and French maps (BRGM / InfoTerre).
  • Offline mode: Download and cache map tiles to work in remote areas without any internet connection.
  • Geolocation: Automatic GPS coordinate capture (Latitude, Longitude, Altitude) and address conversion.

Structural Measurement Tools

  • Integrated compass & clinometer: Instantly measure dip and strike/azimuth directly on outcrops.
  • Stereonet: Visualize structural measurements on Schmidt or Wulff diagrams and compute mean vectors.
  • Augmented reality (AR): Locate sampling points and visualize distances/orientations in real time through the camera.

Digital Field Notebook

  • Detailed records: Capture lithology, stratigraphy (integrated ICS chronostratigraphic scale), texture, minerals, fossils, and HCl tests.
  • Photos & sketches: Take photos and annotate them with sketches directly in the app.
  • Field checklist: Never leave without essential gear (hammer, hand lens, PPE) thanks to the built-in checklist.

Advanced Artificial Intelligence

  • Local AI (100% private and offline): Use visual recognition and voice dictation without sending data online.
  • Scale detection: AI automatically checks whether a scale reference (coin, hammer, pen) is present in sample photos.
  • Optional cloud assistant: Connect your Gemini API key to enrich descriptions and geological context.

Exports & Reports

  • Standard formats: Export to CSV, GeoJSON, GPX, KML, and GeoPackage (GPKG) for QGIS, ArcGIS, or Google Earth.
  • PDF reports: Automatically generate printable PDF sheets from your observations.
  • ZIP backup: Archive all your data and images into a portable ZIP file.

Privacy & Security

  • Local-first: Your data stays on your device. No account creation required.
  • Encryption: Your personal API keys are protected with AES-256.

Whether you work in mapping, sedimentology, metamorphism, or sample collection, Lithotheque supports you from the lab to the most remote field locations.

Video Presentation

Interface & Tools

Configuration Requise & Compatibilité

Besoins matériels de l'application Android Lithotheque pour un fonctionnement optimal sur le terrain.

Spécifications Générales

Système & Architecture

  • Android Minimum : Android 12L (API 32)
  • Android Conseillé : Android 14 à 16 (API 37)
  • Architecture CPU : arm64-v8a (64-bit uniquement)
  • Fonctionnalités requises : Caméra, Localisation GPS, Stockage média
Mémoire & Stockage

RAM & Espace Disque

  • RAM Compatible : 4 Go (avec mode allégé automatique pour l'IA)
  • RAM Conseillée : 6 Go minimum pour un usage stable
  • RAM Confortable : 8 Go ou plus (pour les modèles IA avancés)
  • Stockage Minimum : 500 Mo libres
  • Stockage Conseillé : 1 Go à 2 Go libres (pour les cartes hors-ligne)
Appareils Cibles

Profils de Smartphones

  • Minimum Acceptable : Appareil 64-bit avec 4 Go de RAM et Android 12L.
  • Conseillé : Appareil moderne avec 6 Go de RAM ou plus, bon GPU/NPU.
  • Idéal : Google Pixel (6+), Samsung Galaxy (S21+), Xiaomi Pro (avec puces IA dédiées).

Compliance and Transparency

Read the complete multilingual privacy and legal notice prepared for platform compliance and scientific users.

Legal Notice (App) Privacy Policy