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Screenshots

  • Geology Toolkit: Field Guide screenshot 1
  • Geology Toolkit: Field Guide screenshot 2
  • Geology Toolkit: Field Guide screenshot 3
  • Geology Toolkit: Field Guide screenshot 4

About Geology Toolkit: Field Guide

Geology Toolkit uses AI to identify rocks and minerals, explain formations and create labelled pencil sketches all from a photo, then tells you the story behind them - how they formed, what they're made of and what else you might find nearby. Also includes geological information like Mohs hardness, luster, chemical formula and much more. Whether you're a curious walker who picked up something interesting, a rockhound building your collection, a student preparing for fieldwork, or a professional working in the field, Geology Toolkit gives you a considered field guide in your pocket. What you can do • Identify rocks, minerals, crystals, gems, and pebbles from photos • Read the full formation story - how each specimen formed, over what timescale, in what conditions • Discover companion minerals commonly found alongside your finds • Save specimens to your personal field guide with sketches, notes, and location • Get confidence scores and alternative identifications for tricky specimens Built for serious curiosity • Rockhounds and collectors building a field guide of finds • Geology and earth science students studying mineralogy, petrology, and classification • Field professionals needing quick, reliable identification and reference • Educators and parents exploring geology with curious learners • Anyone who's ever picked up a stone and wondered what it was Why Geology Toolkit Most rock identifier apps stop at a name. Geology Toolkit goes further - explaining why a rock is what it is, how it formed, and what to look for in the field. Every identification adds to your personal field guide, building a reference you'll return to. Subscribe for unlimited identifications, full formation histories, companion mineral data, and an exportable field record. From photo to real geological understanding - one specimen at a time. Terms of Use: https://www.geologytoolkit.com/terms Privacy Policy: https://www.geologytoolkit.com/privacy-policy

Ratings & reviews

4.6

28 ratings

5 ★ 75% 4 ★ 18% 3 ★ 0% 2 ★ 4% 1 ★ 4%

What’s new

Version 2.2.0 · Updated August 25, 2026

NEW: What's Beneath Ever wondered what exactly is under your feet? Now you can find out. The new "What's beneath" section in Discover shows the rock record for your area - every layer, stacked on a timeline spanning millions (sometimes billions) of years. • See the surface geology where you're standing, with just your approximate location - or look up any place by name • Scroll a time-scaled column of the rock layers recorded for your region, from yesterday's sediments down to ancient basement rock • Spot the gaps - missing chapters of deep time, marked right where the record skips. Some regions are missing hundreds of millions of years • Just identified a rock? Tap "See the rock record beneath this find" on the result to explore the geology where you found it • Browse hand-checked famous columns - start with the Grand Canyon - no location needed, works offline Geologic data © Macrostrat (CC BY 4.0). Coverage is deepest across North America and growing elsewhere. Also in this update: stability improvements and crash reporting, so problems get found and fixed faster.

App privacy

The developer, Laurence Wayne, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction, Other Usage Data
  • Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
  • Location: Coarse Location

Used for: Analytics, App Functionality

Alternatives to Geology Toolkit: Field Guide

Looking for apps like Geology Toolkit: Field Guide? Here are 6 similar apps on the App Store. The highest rated is DeepTime for Geology (5.0/5), and all 6 are free to download.

Geology Toolkit: Field Guide vs. alternatives
App Rating Price Last updated
Geology Toolkit: Field Guide 4.6 / 5 (28 ratings) Free August 25, 2026
Geology Quiz 4.3 / 5 (40) Free Aug 17, 2026
DeepTime for Geology 5.0 / 5 (7) Free Jul 8, 2026
Geology Dictionary - Offline 3.4 / 5 (5) Free Jan 20, 2026
Rock Identifier: Mineral Guide 4.8 / 5 (12) Free Jul 14, 2026
iMineralogist: Rock Map 5.0 / 5 (1) Free Jul 31, 2026
Geology Quiz Trivia – Free Sep 5, 2026