Comparison

Rock Identifier vs Diamond Tester

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

Head to head
About

Rock Identifier

Identify rocks, minerals, crystals, and gemstones instantly with a photo. Get detailed information on properties, hardness, and value. Learn to distinguish authentic stones from imitations.

Highlights
  • Instant rock, mineral, crystal & gemstone identification
  • Detailed stone information (name, hardness, properties)
  • Estimated gemstone value ranges & rarity insights
  • Authenticity indicators for imitations/treatments
  • Compare similar stones
  • Save favorites and build a collection
Features
Read full description

Discover the fascinating world of rocks, minerals, crystals, and gemstones with Rock Identifier — your smart rock identification and analysis app. Simply take a photo of any rock, mineral, crystal, or gemstone, and get instant identification using advanced image recognition. Learn the stone’s name, hardness (Mohs scale), physical properties, crystal type, and similar stones in seconds. Beyond identification, Rock Identifier helps you understand a stone’s potential value and authenticity indicators. Explore estimated value ranges, rarity information, and visual clues that may help distinguish natural stones from imitations or treated crystals. Whether you’re a collector checking a gemstone, a student learning geology, or someone wondering if a found stone is real or fake, Rock Identifier gives you clear, educational insights you can trust. From common minerals like quartz and calcite to rare crystals and valuable gemstones, gain knowledge, background, and comparison data — all in one powerful rock scanner app. Perfect for rockhounds, collectors, students, hobbyists, and nature lovers, Rock Identifier turns curiosity into confidence. Key Features: • Instant rock, mineral, crystal & gemstone identification • Detailed info: name, hardness, properties, and structure • Estimated gemstone value ranges & rarity insights • Authenticity indicators to help spot imitations or treatments • Compare similar stones & common look-alikes • Discover natural vs synthetic stone characteristics • Save favorites and build your personal collection • Ideal for learning, collecting, and outdoor exploration Premium Features: • Fake vs Real analysis • Stone value estimation • Unlimited scans Privacy Policy: https://drive.google.com/file/d/184sf2Bd2ahP_Is_M2o0XehfGm1bExLSY/view?usp=sharing Terms of Use: https://drive.google.com/file/d/1ex1HvoOrjpGWr2cvWuqdtO1vKp2VXSUa/view?usp=sharing Scan stones, estimate value, and learn how to recognize real vs imitation crystals — all from your phone.

About

Diamond Tester

This app uses AI and your device's camera to authenticate and grade diamonds and gemstones. It provides instant analysis, detailed 4C grading, and generates professional PDF appraisal reports. You can also chat with an AI gemologist and save your collection.

Highlights
  • Instant stone authentication
  • Complete 4C grading
  • Advanced visual analysis
  • AI gemologist chatbot
  • Professional PDF reports
  • Personal collection vault
Features
Read full description

Welcome to Diamond AI, the ultimate digital gemological instrument built directly into your device. Whether you are a jewelry enthusiast, a gemstone collector, or a professional appraiser, Diamond AI transforms your camera into an expert authentication and grading engine. Powered by advanced artificial intelligence, our app analyzes the intricacies of any diamond or gemstone, instantly verifying authenticity and generating comprehensive appraisals based on strict industry standards. # UNLOCK THE TRUE VALUE OF YOUR STONES Stop guessing and start knowing. With a single scan, Diamond AI meticulously examines the structure, light performance, and quality of your stone, delivering a professional-grade report directly to your screen. 〉 CORE FEATURES ■ Instant Authentication Scan any stone to receive an immediate verdict on its realness and authenticity. ■ Complete 4C Grading System ► Cut: Detailed analysis of the stone's proportions and symmetry. ► Color: Assessment of color grades based on professional standards. ► Clarity: Surface condition and internal characteristics check. ► Carat: AI-driven weight estimations based on visual dimensions. ■ Advanced Visual Analysis Get a technical breakdown of how your diamond interacts with light: ○ Brilliance Rating ○ Fire & Dispersion Metrics ○ Scintillation Scoring ■ Ask Diamond AI (Your Pocket Gemologist) Have a specific question about a stone? Chat directly with our advanced AI gemologist. ‣ Ask about GIA/AGS certifications. ‣ Get real-time advice on jewelry purchasing. ‣ Learn how to spot lab-grown vs. natural diamonds. ■ Professional PDF Reports ◆ Generate highly detailed, beautifully formatted PDF appraisal reports instantly. ◆ Easily export and share reports for insurance, resale, or professional use. ■ Personal Collection Vault ⌘ Save every scan into a secure, organized digital collection. ⌘ Track the estimated quality and specifications of your entire jewelry portfolio. # DIAMOND AI PRO Take your appraisals to the absolute highest level. Upgrading to the Pro version completely unlocks the power of the application: ∞ Unlimited Stone Scans & Appraisals ∞ Unlimited Custom PDF Report Generation ∞ Full 24/7 Access to the AI Gemologist Chatbot ∞ 100% Ad-Free Experience Our app available as a subscription. Payment will be charged to your 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. Your account will be charged for renewal within 24 hours prior to the end of the current period. ⁕ Download Diamond AI today and carry a master gemologist in your pocket. --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/privac-policy-inovations

Screenshots

Rock Identifier4 screens
Diamond Tester4 screens

Verdict

The call

The clearest difference is monetization model: Rock Identifier at free with in-app purchases against Diamond Tester's subscription. Rock Identifier also leads on ratings volume (235 vs 1) and iOS requirement (15.1 vs 18.0). Diamond Tester's advantage is rating (5.0 vs 4.5). On price, update cadence, ads and in-app purchases 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 Identifier sells 3 in-app purchases, starting at $6.99 per 7 days and Diamond Tester sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Diamond Tester holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Rock Identifier has 235 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Rock Identifier ships an update every 9 days, Diamond Tester every 2 weeks. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Rock Identifier versus Diamond Tester: the parameters behind the verdict, then further details
ParameterRock IdentifierDiamond Tester
PriceFreeFree
Rating4.5 (235 ratings)5.0 (1 ratings) — better
Positive reviews70.6% of reviews—
Number of ratings235 — better1
Update frequencyEvery 9 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better18.0
Further details — not scored
Size52 MB21 MB
Age rating4+4+
Developernurten cayBouazza El Amri

Customer experience

Rock Identifier

All ratings235 ratings
Positive90.2%
Neutral1.3%
Negative8.5%
Written reviews17 reviews
Positive70.6%
Neutral0.0%
Negative29.4%

Diamond Tester

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Rock Identifier

Subscriptions3
  • rock_weekly$6.997 Days
  • rock_yearly$39.991 Year
  • rock_yearly_free_trial3 Days trial$49.991 Year
2 purchases

Diamond Tester

Subscriptions1
  • PRO Weekly3 Days trial$4.997 Days
One-time1
  • One-time Payment$34.99

Questions

Is Rock Identifier free?
Rock Identifier is free to download, with in-app purchases available.
Is Diamond Tester free?
Diamond Tester is free to download, with in-app purchases available.
Which has better reviews, Rock Identifier or Diamond Tester?
Diamond Tester is rated higher. Rock Identifier averages 4.5 out of 5 from 235 ratings, while Diamond Tester averages 5.0 from 1 ratings.
Do Rock Identifier or Diamond Tester have ads?
Neither Rock Identifier nor Diamond Tester shows ads.
Which is updated more often, Rock Identifier or Diamond Tester?
Rock Identifier ships an update every 9 days, and Diamond Tester every 2 weeks. Most recently, Rock Identifier was updated on November 10, 2026 and Diamond Tester on October 31, 2026.

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