# G-Spyke: stratigraphic columns — Stratigraphic columns, offline

> Stratigraphic columns, offline (iPhone/iPad app by Juan Esteban Mosquera Rivera.)

- Source: https://appshunter.io/ios/app/g-spyke-stratigraphic-columns/id6788485915 (this page in markdown: same URL + `.md`)
- Developer: [Juan Esteban Mosquera Rivera](https://appshunter.io/developer/6788485917)
- Category: Education, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 40 MB
- Languages: American English
- Released: 2026-08-04
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/g-spyke-stratigraphic-columns/id6788485915/reviews.md

## What is G?

G-Spyke is a field geology app for recording stratigraphic columns, designed for geologists, students, and researchers working outdoors.

WHAT YOU CAN DO
• Build stratigraphic columns layer by layer, from base to top
• Record lithology, grain size, sedimentary structures, contacts, and depositional environment for each layer
• Attach field photos to individual layers
• Add strike/dip measurements and Munsell colors
• Organize layers into stratigraphic units (Group → Formation → Member)
• Tag projects with GPS location

EXPORT
Export your columns as PNG, CSV — ready for reports and publications.

OFFLINE FIRST
Works entirely without internet. Your data stays on your device. Automatic backups survive app reinstalls.

Built by geologists, for geologists.

Learn more at serpentinitelabs.com


## Version history (last 4 releases)

### 0.1.4 — 2026-09-01

• Improved project storage and recovery reliability.
• Fixed startup crashes affecting some Android devices.
• Existing projects are now preserved and migrated safely.
• Fixed layer ordering and persistence issues.

### 0.1.3 — 2026-08-30

Version 0.1.3 improves field recording, visualization, and reliability.

• Refined stratigraphic column navigation with smoother zoom and scale controls.
• Expanded editing for beds, covered intervals, unconformities, fault contacts, and intrusive contacts.
• Improved lithology patterns, contacts, symbols, annotations, and visual exports.
• Strengthened data migration, backup, restore, and merge safeguards.
• Improved GPS capture, photo workflows, localization, and layouts across iPhone and iPad.
• Fixed stability, overflow, and data-preservation issues.

### 0.1.1 — 2026-08-28

This update makes G-Spyke more reliable and easier to use in the field.
• Improved layer and covered-interval creation, editing, and organization
• Clearer geological patterns, contacts, symbols, notes, and column previews
• More reliable PDF, PNG, SVG, CSV, JSON, SedLog, and striplog exports
• Better layouts on phones and tablets, including large text support
• Improved GPS permission guidance, localization, backups, and data migrations
• General stability, compatibility, and performance improvements

### 0.1.0 — 2026-08-05

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*