Photograph the specimen
Add an overall view and, when useful, a close detail or a second face. Optional find context stays attached to the record.
A field cabinet in your pocket
Identify it.
Keep the story.
Photograph a rock, mineral, gem or fossil. Rock Hound suggests a defensible technical name, explains what stands out, and saves the specimen to your private collection.
Join the closed beta
See how it works
Android and iOS builds are being prepared. No age profile is requested.
LIKELY MATCHPorphyritic basaltIgneous rock · mafic composition
From field to cabinet
One quick flow. A useful record.
The app starts with the camera, keeps the geology clear, and avoids pretending a photograph can prove more than it can.
Narrow the identification
Rock Hound reports common and technical names with visible evidence and uncertainty. If needed, it asks no more than three simple, safe questions.
Save it automatically
The photos and identification become a collection entry immediately, ready for tags, a collection number, notes, favourites and later correction.
Built for looking closely
Your collection, not a social feed.
Browse a visual cabinet or inspect every cover image edge to edge. The tools are useful in the field and quiet enough to stay out of the specimen’s way.
Fast visual browsing
Filter favourites, rocks, minerals, gems, fossils and work in progress. Search names, tags and collection numbers.
Swipe, zoom and compare
Move through cover photos full screen with 1–5× zoom. Tonal, detail and colour views are clearly labelled as viewing aids—not mineral tests.
Geology-specific detail
Keep classification, lustre, texture, composition, crystal system, fossil context and your own private field notes together.
Honest when the image is not enough
Results include alternatives and conflicting evidence. Important or hazardous determinations should still be checked with an experienced specialist.
Private by design
A collection app should respect the collector.
Rock Hound does not request date of birth or build an age profile. Your specimen records are private to your Mashr account.
Optional location
Exact coordinates stay in the private record. Only a coarse area may assist identification, and location can be omitted.
Private notes stay private
Personal notes are stored with the specimen but are not sent to the identification model.
You control deletion
Delete one specimen or all of your Rock Hound records and photos from Settings.
AI-assisted, not laboratory-confirmedPhoto identification can be wrong. Do not use the app to decide whether a specimen is safe to touch, cut, grind, taste or heat.