What is that rock? Identify it in seconds.
Rockhound is the AI rock identifier app that recognises thousands of rocks, minerals, crystals, and gemstones from a single photo — then lets a real geologist verify the result. Free on iPhone and iPad.
Free download · 5.0★ on the App Store · iOS 17.6+
Everything a rockhound needs in one app
From instant rock identification to offline field maps — Rockhound is built for collectors, geology students, and the simply curious.
Instant AI identification
Point your camera at any rock and get an accurate identification in seconds, with confidence scores and details on hardness, chemical composition, and crystal structure.
Real geologist verification
Not sure about the AI result? Request a review from a professional geologist and get expert confirmation or correction within 24–48 hours, with detailed notes.
200,000+ collecting sites
Discover rock hunting locations near you — BLM and Forest Service lands, known mineral localities, site details, and directions.
Offline maps
Download outdoors and satellite map tiles before you leave, so the atlas keeps working on remote adventures without cell coverage.
Complete mineral database
Mohs hardness, crystal systems, chemical formulas, optical properties, formation environments, and IMA status for thousands of minerals.
Your rock collection
Save identified specimens with notes, locations, and photos. Organize custom collections with cloud backup that keeps everything safe.
See Rockhound in action
Real screens from the app — identification, atlas, offline maps, and field tools.
How rock identification works
Three steps from "what is that rock?" to a verified answer.
Snap a photo
Take a picture with your camera or upload one from your gallery. Good lighting and a clean specimen give the best results.
Get the AI identification
In seconds, Rockhound names your rock, mineral, crystal, or gemstone — with a confidence score and full geological details.
Verify with a geologist
Want to be sure? Send it to a professional geologist and receive expert confirmation within 24–48 hours.
Loved by rockhounds
Rated 5.0 out of 5 on the App Store.
"Just snap a pic or upload from your gallery, and the AI does its magic. It identifies rocks, minerals, fossils, gemstones, and crystals with confidence scores, so you know how reliable the result is."— Dushyantgautam, App Store review
"It's like having a geology expert in your pocket! The UI is sleek, dark mode and all, making it easy on the eyes."— Dushyantgautam, App Store review
"Whether you're a pro or just starting out, Rockhound's got you covered. Highly recommend! 5/5 stars."— Dushyantgautam, App Store review
Frequently asked questions
Quick answers about the Rockhound rock identifier app.
Is there a free app that identifies rocks?
Yes. Rockhound: Rock Identifier is free to download on iPhone and iPad. Point your camera at any rock and the AI identifies it in seconds, with detailed information about hardness, chemical composition, and crystal structure. Optional Pro features add expert geologist verification.
How accurate is the Rockhound rock identifier?
Rockhound's AI recognises thousands of minerals, crystals, gemstones, and rock types and shows a confidence score with every identification. If you want certainty, you can request a review from a professional geologist and get expert confirmation within 24–48 hours.
Can the app identify crystals and gemstones, not just rocks?
Yes. Rockhound identifies rocks, minerals, crystals, gemstones, and fossils from a photo, and includes a complete mineral database with Mohs hardness, crystal systems, chemical formulas, and formation environments.
Does Rockhound work offline in the field?
Yes. You can download offline maps (outdoors and satellite styles) before you head out, so the atlas of 200,000+ collecting sites works even in remote areas without cell coverage.
Where can I find places to go rockhounding near me?
Rockhound includes a map of more than 200,000 collecting sites, including BLM and Forest Service lands and known mineral localities, with site details and directions. The Hidden Gems feature adds curated locations with photos, videos, and collecting tips. Read our guide to finding rockhounding sites near you.
What devices does Rockhound support?
Rockhound runs on iPhone, iPad, and iPod touch with iOS 17.6 or later. It is free to download from the App Store.
Learn rock & mineral identification
Free field guides written for collectors — from your first "what rock did I find?" to reading crystal systems like a geologist.
How to Identify Rocks
The complete beginner's method: color, hardness, streak, luster, and how a photo ID app fits in.
What Rock Did I Find?
A practical walkthrough for naming that mystery rock in your hand — geodes, agates, quartz, and more.
Identify Crystals
Tell real crystals from glass and fakes, and learn the fastest way to identify any crystal by photo.
Identify Minerals
Use hardness, streak, cleavage, and luster to identify minerals — plus the modern AI shortcut.
Rockhounding for Beginners
Gear, rules, ethics, and where to legally collect rocks — everything to start the hobby right.
Mohs Hardness Scale
How to run a scratch test at home with a fingernail, coin, knife, and glass.
Stop wondering. Start identifying.
Download Rockhound free and identify your first rock in under a minute — then explore 200,000+ collecting sites near you.
Download Rockhound FreeiPhone & iPad · iOS 17.6+ · No account required to start