Geology Toolkit: Field Guide

Geology Toolkit: Field Guide

Rock, mineral & crystal ID

28 ratings
3 reviews
Free
In-App Purchases

Details

Released
May 22, 2025
Updated
October 28, 2026
Geology Toolkit: Field Guide screenshot #1 for iPhone
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About

Identify rocks, minerals, and crystals using your camera. Get detailed formation histories, geological data, and create labeled sketches. Build a personal field guide of your finds.

✓Identify rocks, minerals, crystals, gems, and pebbles from photos
✓Detailed formation histories and geological data
✓Generate labeled pencil field sketches
✓Save specimens to a personal field guide
✓Daily Rock of the Day and quizzes
✓Explore geological layers of famous locations
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What's New in Geology Toolkit

3.0.0

October 28, 2026

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

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Subscriptions & In-App Purchases

Weekly Subscription

Full access to Geology AI (weekly)

$2.997 Days
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User reviews

Missed opportunity

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.
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Response from developer

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

App takes a long time to analyze rock/ mineral

Response from developer

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.

purchase

Good app

Response from developer

Thanks for your feedback! We’re glad you’re enjoying the app. We’re always working on improvements and hope future updates make your experience even better.

Developer apps

FAQ

What is Geology Toolkit?

Geology Toolkit is an AI-powered field guide that identifies rocks, minerals, and crystals from your photos. It provides detailed formation histories, geological data, and allows you to create labeled sketches of your finds.

How does Geology Toolkit identify rocks?

Geology Toolkit uses a frontier-class AI model to analyze photos of rocks, minerals, crystals, gems, and pebbles. It then provides identification, formation history, and geological details like Mohs hardness and chemical formula.

Can I save my rock discoveries with Geology Toolkit?

Yes, you can save identified specimens to your personal field guide. This includes sketches, notes, and locations, building a reference of your finds.

Does Geology Toolkit offer a free trial?

Yes, Geology Toolkit offers a 7-day free trial. After the trial, you can subscribe for unlimited identifications, full formation histories, and other premium features.

What subscription plans are available for Geology Toolkit?

Subscription plans include a Weekly Subscription for $2.99/P7D and a Geology AI Yearly Subscription for $24.99/P1Y, which includes a 7-day free trial.

What languages does Geology Toolkit support?

Geology Toolkit is available in English, Spanish, German, French, Portuguese, and Japanese, making it accessible to a global audience.

What is the age rating for Geology Toolkit?

Geology Toolkit has an age rating of 4+, making it suitable for young learners and adults interested in geology.

How often is Geology Toolkit updated?

The latest version is 3.0.0, and the app was last updated on October 28, 2026, indicating regular maintenance and updates.