# Rock ID: Gem & Crystal Scan — Mineral Crystal Photo Scanner

> Offline rock and mineral identification app with detailed geological profiles. (iPhone/iPad app by Phuc Pham.)

- Source: https://appshunter.io/ios/app/rock-id-gem-and-crystal-scan/id6775267906 (this page in markdown: same URL + `.md`)
- Developer: [Phuc Pham](https://appshunter.io/developer/1893081423)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 18.0 · 23 MB
- Languages: American English
- Released: 2026-07-20
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/rock-id-gem-and-crystal-scan/id6775267906/reviews.md

## What is Rock ID?

Found a strange stone on a hike and nobody can tell you what it is? Photograph it and Rock Identifier ranks the closest matches from a bundled geology catalog, then opens a full specimen profile so you actually learn what you picked up.

Most identifier apps ship your photo to a server and hand back one confident-sounding answer. This one works entirely on your device, offline, and shows a ranked list of possible matches with an honest confidence score, plus a clear "no confident match" screen that sends you to search the catalog instead of inventing a species. Every profile is real geological reference data: Mohs hardness, luster, streak, composition, formation, where it occurs, uses, folklore and quick facts.

WHAT YOU GET
- Photograph a rock with the camera or pick a shot from your library and see ranked possible matches in seconds
- Know exactly what you are holding: Mohs hardness, luster, streak, colors, composition, formation and occurrence for 67 specimens
- Browse igneous, sedimentary, metamorphic, mineral, crystal and gemstone categories, or search by name, alias, color or composition
- Keep every find in a personal collection with its photo, notes, favorites and the date you added it
- Estimate hardness in the field with the full Mohs scratch scale and name the shine with the luster glossary
- Read the cultural lore behind amethyst, rose quartz, malachite, turquoise and obsidian, clearly labeled as folklore, not science

PERFECT FOR
- Rockhounds and beach combers who come home with a pocket full of unknowns
- Geology and earth science students who need hardness, streak and formation facts fast
- Crystal collectors cataloging what is already on the shelf
- Parents and teachers turning a walk into a real specimen hunt

WHY NOT JUST SEARCH THE PHOTO ONLINE
Because a web search gives you a name and stops there, needs signal, and is useless in a canyon or on a quarry floor. Rock Identifier keeps the whole catalog, every profile and your saved collection on the phone, so it works with zero bars, and it says when it is unsure instead of guessing. Results are a best-effort visual match for learning, not a professional appraisal.

PRIVACY
Your photos never leave your iPhone. Identification runs fully on device, your collection is stored locally, and there are no accounts, no servers and no tracking.

FULL ACCESS
Premium unlocks unlimited photo identification, the complete 67-specimen catalog with full profiles, and an unlimited personal collection with notes. Choose weekly, yearly, or a one-time lifetime purchase. Subscriptions renew automatically until cancelled in your App Store settings; lifetime is paid once.

Take a photo of the stone on your windowsill right now and find out what it actually is.

Terms of Use (EULA): https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Questions? tphuc.work@gmail.com

## Key features

- Photo identification of rocks and minerals
- Ranked matches with confidence scores
- Detailed specimen profiles
- Offline functionality
- Personal collection of finds
- Mohs hardness scale and luster glossary

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $24.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Pro | $49.99 | one-time |



## Frequently asked questions about Rock ID

### How does Rock ID identify rocks?

Rock ID uses your device's camera to photograph a rock or mineral. It then analyzes the image and provides a ranked list of possible matches from its offline geology catalog. Each match includes a confidence score, and you can access detailed profiles for further learning.

### Does Rock ID work offline?

Yes, Rock ID is designed to work entirely on your device, meaning it functions offline. This allows you to identify stones even when you don't have a signal, such as during hikes or in remote areas.

### What kind of information is available in the specimen profiles?

Each profile provides comprehensive geological reference data, including Mohs hardness, luster, streak, composition, formation, occurrence, uses, and folklore. This helps you understand the scientific and cultural aspects of the identified specimen.

### Can I save the rocks I identify?

Absolutely. Rock ID allows you to keep a personal collection of all your finds. You can add photos, notes, mark favorites, and record the date you added each specimen to your collection.

### What are the subscription options for Rock ID?

Rock ID offers premium access with unlimited photo identification, the full 67-specimen catalog, and an unlimited personal collection. You can choose from weekly ($4.99/P7D), yearly ($24.99/P1Y), or a one-time lifetime purchase.

### Is Rock ID suitable for educational purposes?

Yes, Rock ID is perfect for geology and earth science students, as well as parents and teachers. It turns outdoor exploration into a specimen hunt by providing fast access to hardness, streak, and formation facts.

### Does Rock ID have ads?

No, Rock ID does not contain advertisements. The app prioritizes a clean user experience, and any premium features are accessed through in-app purchases.

### How often is Rock ID updated?

Rock ID was last updated on August 19, 2026, with version 1.0.1. The release date was July 20, 2026, indicating a recent release and potential for future updates.

## Version history (last 2 releases)

### 1.0.1 — 2026-08-19

Bug fixes and performance improvements.

### 1.0.0 — 2026-07-20

No release notes.

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All apps by Phuc Pham: https://appshunter.io/developer/1893081423

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*