MineralGuide: Gems & Rocks
Offline mineral field guide
$2.99 · Designed for iPad. Not verified for macOS.
Also Included In
A paid offline mineral atlas with on-device photo suggestions, specimen records, widgets, and no ads or analytics.
MineralGuide: Gems & Rocks is a paid, offline-first field reference for mineral collectors, rockhounds, gem learners, and earth science students. Browse 182 common gems, rocks, and minerals with clear photos, formulas, hardness, density, crystal systems, safety notes, and image attribution.
Use the guide anywhere. The core atlas works offline, with no account, no ads, no analytics SDK, no cloud identification, and no cloud sync.
Key features:
- Offline mineral atlas with 182 species.
- Browse by crystal system and search by name or formula.
- On-device photo identification that suggests candidate minerals for verification.
- Manual filters for color, hardness, crystal system, and streak.
- Detailed reference pages with properties, safety hints, and source credits.
- Specimen records for photos, locality, date, size, source, and notes.
- CSV export for your own collection records.
- Daily mineral and Home Screen widgets.
- Multilingual interface and reference content.
Important: photo identification is an assistive reference feature. It does not replace professional gemological testing, trading appraisal, lab analysis, medical advice, or safety guidance. Always verify important decisions with qualified professionals.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 帆 胡, 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
- 帆 胡
- Size
- 127.9 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 5 more
- English, French, German, Japanese, Korean, Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Yunfan labs.
