Comparison

Bone Zone vs Gemistry Pro

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

Head to head
About

Bone Zone

Features
Read full description

Discover the prehistoric world hiding beneath your feet with Bone Zone — interactive geological maps that turn every hike into a journey through deep time. EXPLORE THE GEOLOGY AROUND YOU • Detailed geological maps for all 48 continental states • Formations colored by geologic age using international standard colors • GPS centers the map on your location and your state • Tap any formation to learn what it is, how it formed, and how old it is COULD YOU FIND A FOSSIL HERE? • Every formation gets a plain-language fossil verdict — from "Hot Spot" to "Wrong Rock" — based on its rock type and geological age • See documented fossil finds near the exact spot you tapped, from the Paleobiology Database's scientific records • Fossil pins show real discoveries: species, age, and taxonomy • Browse actual museum specimen photos and records from collections across the country (iDigBio) LEARN AS YOU EXPLORE • Interactive learning center covering rocks, ages, and fossil types • A geological timeline from the first life to the ice ages • Field safety guidelines and collecting ethics • Clear guidance on laws and land access — know before you dig BUILT FOR REAL ADVENTURES • State data downloads on demand and stays on your device • Perfect for rockhounds, students, educators, scout troops, and anyone curious about what's underfoot • Promotes responsible exploration and Leave No Trace principles FREE WITH ADS — REMOVE THEM FOREVER Bone Zone is free to use, supported by small banner ads that never cover the map. An optional one-time purchase removes all ads permanently. No subscriptions, no accounts. From shark teeth on beaches to ancient coral reefs in your local hills, start your journey through deep time today. Privacy: https://bone-zone.app/privacy-policy.html Terms: https://bone-zone.app/terms-of-service.html

About

Gemistry Pro

Features
Read full description

Gemistry Pro – Learn, Test & Identify Gemstones Discover the fascinating world of gemstones with Gemistry Pro, a comprehensive learning and reference app designed for students, collectors, jewellery enthusiasts, lapidaries, and industry professionals. Explore a growing database of gemstones, study their properties, test your knowledge through interactive quizzes, and build a deeper understanding of the gems that shape the jewellery industry. Features • Comprehensive gemstone database featuring a wide range of natural gemstones. • Detailed gemstone information, including colour, hardness, crystal system, lustre, refractive index, specific gravity, and other key identification characteristics. • High-quality reference images to support learning and visual identification. • Interactive quizzes designed to help reinforce knowledge and improve recognition skills. • Educational resources suitable for both beginners and experienced users. • Regular updates with new gemstones, content, and features. Who Is Gemistry Pro For? • Gemmology students • Jewellery designers • Goldsmiths and silversmiths • Gemstone collectors • Lapidary artists • Jewellery retail professionals • Anyone with an interest in gemstones and minerals Why Choose Gemistry Pro? Gemistry Pro was created to make gemstone education accessible, practical, and engaging. Instead of searching through multiple sources, users can access a growing library of gemstone information in one convenient place. Whether you are studying for gemmological qualifications, working within the jewellery trade, researching gemstones for a project, or simply exploring a personal interest, Gemistry Pro provides a reliable resource to support your learning. Created by a professional gemmologist and jewellery designer, Gemistry Pro combines industry knowledge with an easy-to-use learning experience designed to help users develop their understanding of gemstones at their own pace. Learn. Test. Identify. Master Gemstones. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Whether you are beginning your journey into gemmology or looking to expand your existing knowledge, Gemistry Pro provides the tools and information needed to learn about gemstones with confidence.

Screenshots

Bone Zone4 screens
Gemistry Pro4 screens

Verdict

The call

The clearest difference is ads: Gemistry Pro at none against Bone Zone's shown. Gemistry Pro also leads on iOS requirement (15.1 vs 18.2). On price, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Bone Zone sells 1 in-app purchase, starting at $9.99 per year and Gemistry Pro sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Ā· 4 level
Bone Zone versus Gemistry Pro: the parameters behind the verdict, then further details
ParameterBone ZoneGemistry Pro
PriceFreeFree
Update frequencyEvery 10 months—
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.215.1 — better
Further details — not scored
Size8 MB67 MB
Age rating4+12+
DeveloperBrandon TateErin Swanson

In-app purchases

1 purchases

Bone Zone

Subscriptions1
  • Bone Zone Premium3 Days trial$9.991 Year
4 purchases

Gemistry Pro

Subscriptions4
  • Gemistry Pro Monthly$5.991 Month
  • Gemistry Lab Monthly$12.991 Month
  • Gemistry Pro Yearly$49.001 Year
Show 1 more
  • Gemistry Lab Yearly$99.001 Year

Questions

Is Bone Zone free?
Bone Zone is free to download, with in-app purchases available.
Is Gemistry Pro free?
Gemistry Pro is free to download, with in-app purchases available.
Do Bone Zone or Gemistry Pro have ads?
Bone Zone shows ads; Gemistry Pro does not.

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