More than a name. Learn how your rock formed, what it contains and what to look for next time, then keep it in your own field guide with a labelled sketch.
Point your camera at a rock and Geology Toolkit tells you what it is, how it formed and what it is made of, then draws you a labelled pencil sketch of it. One photo, the full story.
Powered by a frontier class AI model, it identifies rocks, minerals, crystals, gems and pebbles, explains the formation history behind each one and gives you the geological detail to go with it: Mohs hardness, lustre, chemical formula, companion minerals and more.
Whether you're a curious walker who picked up something interesting, a rockhound building a collection, a student preparing for fieldwork or a professional out in the field, Geology Toolkit is a considered field guide in your pocket.
What you can do
• Identify rocks, minerals, crystals, gems and pebbles from a photo
• Read the full formation story: how each specimen formed, over what timescale and in what conditions
• Discover the companion minerals commonly found alongside your finds
• Turn any find into a labelled pencil field sketch in seconds
• Save specimens to your personal field guide with sketches, notes and locations
• Get confidence scores and alternative identifications for tricky specimens
• Meet a new Rock of the Day every morning, with a daily quiz to test what you've learned
• Explore What's Beneath: rock columns for places like the Grand Canyon, layer by layer through deep time
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.
Available in English, Spanish, German, French, Portuguese and Japanese.
Try it free for 7 days, then subscribe for unlimited identifications, full formation histories, companion mineral data, sketches 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
I downloaded this app hoping that it would offer a more data driven approach to rock identification, instead this just seems like a worse implementation of other AI apps. What I really want is to be able to feed the app information like hardness, SG and acid test results so that the AI can use all of that data along with the image to give me the best possible result. If this was implemented I do believe it could quickly become the best identification app for informed hobbyists.
Developer Response
Thank you so much for the thoughtful feedback - this is a really valuable suggestion.You’re absolutely right that incorporating additional field data such as hardness, specific gravity, and acid reaction would allow for a more constraint-driven identification process. Combining those inputs with image analysis would move the app closer to a structured diagnostic workflow rather than relying primarily on visual interpretation.At the moment, Geology Toolkit is focused on making rock identification and learning accessible for students and enthusiasts using image-based analysis. However, expanding toward more data-informed identification for advanced users is something I’m very interested in exploring as the app evolves.I appreciate you taking the time to share such detailed input - it helps shape where the app can go next!
Long loading screen
No one 1776
App takes a long time to analyze rock/ mineral
Developer Response
Thanks for letting us know, and sorry about the slow analysis. We know waiting can be frustrating. Analysis time can vary based on photo details and connection speed, and we’re continuously optimizing performance. Your feedback helps us improve, and we hope you’ll give the app another try.
Version 3 runs on a new and improved generation of AI
Every identification, queued photo and formation reading now uses an updated superior model. Expect more accurate names on difficult specimens and formation stories and companion mineral notes with more depth and detail.
Try your own rock first
The welcome tour now lets you identify a rock of your own straight away. The sample result shows everything a full identification gives you: companion minerals, confidence and alternatives, and a labelled field sketch.
Sketches that keep your photo
If a sketch fails, your photo stays where it is and one tap tries again. Momentary errors now retry on their own.
Rock of the Day in your language
Daily specimens, their quizzes and What's Beneath are now in Spanish, German, French, Portuguese and Japanese.
Also in this release
- A new app icon
- Subscription price and trial terms shown clearly before you start
- Fixes and polish throughout
Version 3.0.0
The developer, Laurence Wayne, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Location
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More