PetraLog
Identify Rocks & Minerals
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Point your camera at any rock or mineral and instantly know what it is.
PetraLog uses Apple Intelligence to identify rocks and minerals from a photo, giving you a plain-English explanation of what you're holding — what it is, how it formed, where it's typically found, and interesting facts.
IDENTIFY
• Snap a photo or choose from your library
• Get instant identification with confidence level
• Learn the type (igneous, sedimentary, metamorphic, or mineral)
• Discover how it forms and where it's found
COLLECT
• Save specimens to your personal collection
• Add location tags and notes
• Browse your finds in a beautiful gallery
• Build your rock collection over time
Perfect for hikers, collectors, curious kids, and anyone who picks up an interesting rock and wonders "what is this?"
Requires iPhone 15 Pro or newer (Apple Intelligence required).
A subscription is required to access all features.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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The developer, Austen Allred, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Austen Allred
- Size
- 1.3 MB
- Category
- Reference
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Annual $49.99
- Weekly $4.99
- Monthly $9.99
- Copyright
- © 2026 KellyClaude AI