Rock Identifier vs Geomaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rock Identifier
Instantly identify rocks, minerals, and gemstones by taking a photo. Access a comprehensive encyclopedia with detailed information on each stone, learn to distinguish real from fake gems, and explore their properties. The app also includes a metal detector and expert consultation.
- Photo-based rock identification
- Stone and crystal encyclopedia
- Real vs. fake gemstone guide
- Healing properties and zodiac stones
- In-app metal detector
- Expert consultation service
- Personal rock collection management
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Rock Identifier is an all-in-one stone, crystal, mineral, and gemstone identifier. Simply take or upload a photo of a rock or crystal, and the app will tell you all about it in seconds. Want to know the name of a stone you discovered in your rock hounding? Are you curious about the different properties of each stone and crystal you own? Looking to learn about rock and crystal knowledge? Don't miss this powerful stone identifier and crystal guidebook. We will satisfy all your needs! Rock & Mineral & Crystal Identifier Take a photo of any crystals or gemstones and get an instant accurate identification. This rock scanner app can recognize over 6,000 types of rocks and minerals and helps anyone who wants to identify, examine and explore the characteristics of stones. Stone & Crystal Encyclopedia In each of the identification results, the Rock Identifier app provides detailed stone/crystal information which includes: Name, Chemical Formula, Hardness, Colour Variations, and the main locations it can be found. No matter whether you are a beginner rock hound who is trying to identify the stones you discovered or an experienced crystal collector who wants to expand your geological knowledge, Rock Identifier offers the easiest and most comprehensive rock guide. Real VS Fake Gemstone This app delivers detailed and practical gemstone identification method articles, where users can learn to identify if a gemstone or crystal is real by its Color, Cleavage and Fracture, Touch, Shape, Transparency, and the like. Explore Trendy Stones Interested in the healing properties of any crystals? Want to know what gemstones to have for your specific zodiac sign? Download this rock scanner app to find out the mysterious healing power of crystals, and learn more facts about zodiac stones, birthstones, and so much more. Metal Detector Lost your key and have no idea how to find it? With the in-app Metal Detector function, Rock Identifier can help you locate your lost key by measuring the surrounding magnetic field strength. Never worry about losing metal objects again! One-on-one Consultation with Rock Expert This scanner app not only provides you with lively, professional knowledge of mineralogy and petrology but also offers an email service for one-on-one inquiry help. Unique Rock Collections Display all your stone and mineral collectibles with the Collection function; add desirable crystals and gemstones to your wishlist. The app will also automatically keep your ID record so that you can go back to find them. Rock Identifier was created to help more people explore and learn about the geological surroundings around them. Download the app today to enjoy a more pleasant stone & crystal journey and train yourself to be a rock expert! About Rock Identifier Premium: -Subscription Name: Yearly Premium -Subscription Duration:1 year(7 days trial) -Subscription Description: Users will get a 1-year Rock Identifier Premium which includes identifying rocks without limits, studying rocks with numerous info, and no watermarks or ads. • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period • The account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase Terms of Use: https://app-service.rockidentifier.com/static/user_agreement.html Privacy Policy: https://app-service.rockidentifier.com/static/privacy_policy.html Contact us: support@rockidentifier.com Find out more about Picture Rock at: https://www.rockidentifier.com/
Geomaster
This app serves as a comprehensive field and study companion for geology enthusiasts, students, and professionals. It offers integrated geological tools for measurement, reference, and identification, supporting both academic exploration and real-world fieldwork.
- Strike and Dip Compass
- Trend and Plunge Compass
- Geological Time Scale
- Geological Dictionary
- Rock Identification Trees
- Mineral Classification
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GeoMaster GeoMaster is a comprehensive field and study companion for geologists, earth science students, and enthusiasts. Designed to support both fieldwork and academic exploration, GeoMaster integrates powerful geological tools and reference resources into a single, user-friendly platform. Core Features: Strike and Dip Compass – Accurately measure the orientation of geological structures. Trend and Plunge Compass – Precisely assess the directional geometry of features. Navigation Compass – Maintain orientation during field mapping and traverses. Geological Time Scale – Access a structured timeline of Earth’s history. Geological Time Details – Examine detailed information on individual time periods. Quick-Access Widgets – View geological time and dictionary entries directly from your home screen. Geological Dictionary – Reference essential terminology with concise, searchable definitions. Favorites System – Mark and revisit frequently used terms and entries. Rock Section – Browse descriptions, key properties, and identification guides. Identification Trees – Use step-by-step decision trees to assist in rock recognition. Classification Diagrams – Visual tools for accurately classifying rock types. Mineral Section – Explore minerals with detailed property data, groupings, and classification schemes. Why GeoMaster? Integrated Geological Toolkit – Combines measurement, reference, and identification in one app. Field-Ready Design – Optimized for clarity, speed, and usability in real-world conditions. Structured Learning Support – Ideal for both academic study and field applications. Ongoing Enhancements – Regular updates with expanded content and new features. Download GeoMaster today and equip yourself with a reliable, professional-grade geology toolkit—ready for the field, the lab, or the classroom.
Screenshots
Verdict
The clearest difference is review sentiment: Geomaster at 100% against Rock Identifier's 64%. Geomaster also leads on in-app purchases (none vs 17) and rating (5.0 vs 4.7). Rock Identifier's advantage is ratings volume (82K vs 4) and update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Rock Identifier sells 9 in-app purchases, starting at $3.99 per 7 days. Geomaster asks for nothing beyond the download.
Geomaster holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Rock Identifier has 82K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 64% of Rock Identifier's written reviews are positive against 100% of Geomaster's.
Rock Identifier ships an update every 3 weeks, Geomaster every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Rock Identifier | Geomaster |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (82K ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 64.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 82K — better | 4 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Best chart rank | #33 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 201 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Next Vision Limited | Jacques Brayel Tchouanmoe |
Customer experience
Rock Identifier
Geomaster
Bugs and requests
Rock Identifier
Reported bugs
4 issues- App crashes or freezes
- Subscription issues and unexpected charges
- Inaccurate rock identification
- Inability to delete or edit rock entries
Requested features
5 requests- Ability to manually input rock names
- Option to create and manage rock collections
- More comprehensive rock/mineral database
- Improved search and filtering capabilities
- Offline mode for rock identification
Geomaster
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rock Identifier
- Rock Identifier Premium$3.997 Days
- Rock Identifier Premium$7.991 Month
- Rock Identifier Premium14 Days trial$29.991 Year
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- Rock Identifier Premium7 Days trial2 variants$39.991 Year
- Rock Identifier Premium2 variants$39.991 Year
- Rock Identifier Premium1 Month trial3 variants$39.991 Year
- Rock Identifier Premium$69.991 Year
- Rock Unlock New Skin$1.99
- Rock Identifier Premium$69.99
Geomaster
No in-app purchases
Questions
Is Rock Identifier free?
Is Geomaster free?
Which has better reviews, Rock Identifier or Geomaster?
Do Rock Identifier or Geomaster have ads?
Which is updated more often, Rock Identifier or Geomaster?
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