e vs Geology Toolkit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
e
Access a comprehensive database of over 6200 mineral species with detailed facts, including names, formulas, occurrences, and properties. This offline-capable app provides quick lookups and links to a larger online mineral catalog.
- 6200+ mineral species database
- Detailed species information
- Offline access
- Links to e-Rocks.com catalog
- Quick and easy to use
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e‑Rocks is the orignal curated marketplace and reference platform for mineral collectors, dealers, and enthusiasts worldwide. Browse thousands of minerals and specimens for sale from accredited dealers and private sellers. Search and filter by mineral species, locality, classification and price. Use the mineral wiki to explore wider species information, chemistry, and crystallography data. What you can do with e‑Rocks: Browse and search an extensive catalogue of minerals and specimens both currently being sold and in our extensive archive of over 820,000 specimens built over 20 years. Use advanced filters for species, locality, class, and more View rich specimen detail pages with photos and key data Follow auctions, save favourites, and manage watchlists currently via the e-Rocks website Explore mineral taxonomy and reference data via the mineral wiki Sign in to sync your account between web and mobile Access premium collector features with an optional subscription for more pictures and archive data Whether you’re an experienced collector or just starting out, e‑Rocks gives you a huge mineralogical refernce in your pocket. Support: support@e-rocks.com Privacy Policy: https://e-rocks.com/e-rocks-apps-privacy-policy Terms of Use: https://e-rocks.com/about/terms-conditions
Geology Toolkit
Identify rocks with AI and gain a deep understanding of their composition and formation. This app is designed for students and enthusiasts to learn geology beyond simple identification, offering clear explanations and visual tools for study and fieldwork.
- AI-powered rock identification
- Detailed mineral composition insights
- Student-friendly explanations
- Sketch and visual tools for notes
- Focus on geological understanding
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Geology Toolkit uses AI to identify rocks and minerals, explain formations and create labelled pencil sketches all from a photo, then tells you the story behind them - how they formed, what they're made of and what else you might find nearby. Also includes geological information like Mohs hardness, luster, chemical formula and much more. Whether you're a curious walker who picked up something interesting, a rockhound building your collection, a student preparing for fieldwork, or a professional working in the field, Geology Toolkit gives you a considered field guide in your pocket. What you can do • Identify rocks, minerals, crystals, gems, and pebbles from photos • Read the full formation story - how each specimen formed, over what timescale, in what conditions • Discover companion minerals commonly found alongside your finds • Save specimens to your personal field guide with sketches, notes, and location • Get confidence scores and alternative identifications for tricky specimens Built for serious curiosity • Rockhounds and collectors building a field guide of finds • Geology and earth science students studying mineralogy, petrology, and classification • Field professionals needing quick, reliable identification and reference • Educators and parents exploring geology with curious learners • Anyone who's ever picked up a stone and wondered what it was Why Geology Toolkit Most rock identifier apps stop at a name. Geology Toolkit goes further - explaining why a rock is what it is, how it formed, and what to look for in the field. Every identification adds to your personal field guide, building a reference you'll return to. Subscribe for unlimited identifications, full formation histories, companion mineral data, and an exportable field record. From photo to real geological understanding - one specimen at a time. Terms of Use: https://www.geologytoolkit.com/terms Privacy Policy: https://www.geologytoolkit.com/privacy-policy
Screenshots
Verdict
The clearest difference is review sentiment: e at 67% against Geology Toolkit's 0%. e also leads on monetization model (free vs free with in-app purchases). Geology Toolkit's advantage is rating (4.6 vs 3.0) and update cadence (fortnightly vs every 2 months). On price, ads, in-app purchases 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. e sells 3 in-app purchases, starting at $22.99 per 3 months and Geology Toolkit sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Geology Toolkit holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Geology Toolkit has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 67% of e's written reviews are positive against 0% of Geology Toolkit's, so the app with the better star average is not the one people write more warmly about.
e ships an update every 2 months, Geology Toolkit fortnightly. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.
| Parameter | e | Geology Toolkit |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.6 (25 ratings) — better |
| Positive reviews | 66.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 | 25 — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 52 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Wrigley | Laurence Wayne |
Customer experience
e
Geology Toolkit
In-app purchases
e
- e-Rocks Collectors 3 Months$22.993 Months
- e-Rocks Collectors 6 Months$39.006 Months
- e-Rocks Collectors Annual$79.001 Year
Geology Toolkit
- Weekly Subscription$2.997 Days
- Geology AI Yearly Subscription7 Days trial$24.991 Year









