What is the difference between rockidentifier.com and RockScan?

rockidentifier.com is a free rock identifier app with an online rock encyclopedia. RockScan is a rock identifier for iPhone and web that pairs photo ID with 100+ specimen guides, real-vs-fake tells, and step-by-step field triage.

Which rock identifier app is best for iPhone?

Pick by depth: if you want an encyclopedia to browse, rockidentifier.com covers that. If you want photo ID plus specimen guides with lookalikes, hardness context, and real-vs-fake checks, try RockScan free and compare the same find in both.

Can I identify a rock from a photo for free?

Yes. Photograph the find in shade with a coin for scale, run it through a free photo ID, then confirm with a specimen guide — start with our how-to-identify-rock-types triage and the predictable lookalikes on each specimen card.

rockidentifier.com vs RockScan — Pick Your Rock Identifier

rockidentifier.com vs RockScan: Which Rock Identifier Fits You?

rockidentifier.com is a free rock identifier app with an online encyclopedia. RockScan adds photo ID on iPhone and web to 100+ specimen guides with lookalikes, hardness context, and real-vs-fake tells. Use this page to pick in two minutes, then test both on the same rock.

Side by side

rockidentifier.com: free app + browsable online rock encyclopedia and AI rock expert framing.
RockScan: photo ID on iPhone and web, 107 specimen guides and counting, real-vs-fake tells, and field triage like how to identify rock types.

How to decide in two minutes

Snap the same find in both apps, in shade, with a coin for scale.
Compare the top suggestion against the specimen guide: check lookalikes (e.g. basalt vs gabbro, quartz vs glass).
Keep the app whose second guess is also useful — close calls are where guides beat black boxes.