Comparison

Geomaster vs Rock Identification

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Strike and Dip Compass
  • Trend and Plunge Compass
  • Geological Time Scale
  • Geological Dictionary
  • Rock Identification Trees
  • Mineral Classification
Features
Read full description

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.

About

Rock Identification

Identify rocks, minerals, crystals, and gems instantly by taking a photo. Access a comprehensive database with detailed information and educational content to explore the natural world.

Highlights
  • Instant photo identification
  • Comprehensive rock and mineral database
  • Detailed specimen descriptions
  • Geology and gemology educational content
  • User-friendly interface
Features
Read full description

Uncover the hidden treasures of the Earth with Rock & Stone Identifier by Photo! Whether you're a budding geologist, a student, or just curious about the natural world, our app makes identifying rocks, minerals, crystals, and gems effortless and exciting. Simply take a photo, and our advanced AI technology will analyze its features to provide you with detailed information, including its name, type, and properties. Key Features: Instant Identification: Snap a photo and get instant results with high accuracy. Comprehensive Database: Access a vast database of rocks, minerals, crystals, and gems. Detailed Descriptions: Learn about each specimen’s composition, formation, and uses. Educational Content: Dive deeper with articles and fun facts about geology and gemology. User-friendly Interface: Enjoy a seamless experience with our intuitive design. Perfect for hobbyists, educators, and professionals, Gemstone- Gem Stone Identifier by Photo transforms your smartphone into a powerful tool for exploring the natural world. Start your geological adventure today and uncover the secrets of the Earth with every photo you take! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Geomaster4 screens
Rock Identification4 screens

Verdict

The call

The clearest difference is review sentiment: Geomaster at 100% against Rock Identification's 0%. Geomaster also leads on in-app purchases (none vs 3) and rating (5.0 vs 4.8). Rock Identification's advantage is ratings volume (30 vs 4) and iOS requirement (13.0 vs 17.6). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Rock Identification sells 3 in-app purchases, starting at $6.99 per 7 days. Geomaster asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Geomaster holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Rock Identification has 30 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Geomaster's written reviews are positive against 0% of Rock Identification's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Geomaster versus Rock Identification: the parameters behind the verdict, then further details
ParameterGeomasterRock Identification
PriceFreeFree
Rating5.0 (4 ratings) — better4.8 (30 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings430 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size11 MB95 MB
Age rating4+4+
DeveloperJacques Brayel TchouanmoeBhavinkumar Satashiya

Customer experience

Geomaster

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Rock Identification

All ratings30 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Geomaster

No in-app purchases

3 purchases

Rock Identification

Subscriptions3
  • Weekly Subscription$6.997 Days
  • Monthly Subscription$17.991 Month
  • Yearly Subscription$49.991 Year

Questions

Is Geomaster free?
Geomaster is free to download, with no in-app purchases.
Is Rock Identification free?
Rock Identification is free to download, with in-app purchases available.
Which has better reviews, Geomaster or Rock Identification?
Geomaster is rated higher. Geomaster averages 5.0 out of 5 from 4 ratings, while Rock Identification averages 4.8 from 30 ratings.
Do Geomaster or Rock Identification have ads?
Neither Geomaster nor Rock Identification shows ads.
Which is updated more often, Geomaster or Rock Identification?
Geomaster ships an update every 3 months, and Rock Identification every 3 months. Most recently, Geomaster was updated on October 24, 2026 and Rock Identification on October 15, 2026.

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