Mohs – Rock Identifier
Stone, Crystal & Mineral ID
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Snap a rock and get three honest guesses, plus a quick home test when Mohs isn't sure. 3 free scans a day, no account needed.
Mohs identifies rocks, minerals and crystals from a photo, and tells you honestly how sure it is.
WHAT MOHS DOES
• Three best guesses with a confidence level, instead of one overconfident answer.
• When it isn't sure, a quick home test settles it: scratch the stone with a coin or a knife, rub it on the back of a tile to see its streak, try a drop of vinegar or a fridge magnet. Your answers re-rank the results.
• 300+ species pages: what it is, how to tell it apart from its look-alikes, where it's found, a broad value range and safety notes.
• Your collection: save every find with its photo, notes and the place you found it, as a list and on a map. It stays on your phone.
HONEST BY DESIGN
• 3 free scans every day. No account needed.
• Mohs Pro gives you up to 40 scans a day. Monthly or yearly, with the price on screen before you start. The yearly plan has a one-week free trial, and Mohs offers to remind you two days before it ends.
• Value is only shown as a broad range: Mohs can't appraise a specimen.
TIPS FOR A GOOD RESULT
Fill the frame with the stone, use daylight without flash, wet the surface and, if you can, show a freshly broken face.
SUBSCRIPTION
Payment is charged to your Apple ID. The subscription renews automatically unless you cancel at least 24 hours before the end of the period, in Settings > Apple ID > Subscriptions.
Terms of Use: https://nortiz-tech.com/mohs/terms/
Privacy Policy: https://nortiz-tech.com/mohs/privacy-policy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Natalia Ortiz Gomez, 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:
- Purchases
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Natalia Ortiz Gomez
- Size
- 4.2 MB
- Category
- Reference
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Mohs Pro Yearly $24.99
- Mohs Pro Monthly $4.99
- Copyright
- © 2026 Natalia Ortiz