“This app sucks — This app sucks because you have to pay for it and they make you pay for every single thing even though it’s free you have to pay for everything as soon as you scan the rock they make you pay seven dollars a rock. It’s not…”
Independent automated assessment · 6 signal sources · 1,062 reviews scanned · analyzed 2026-10-05.
4.6 ★204,114 ratings
10M+Downloads
4+Age rating
211 MBApp size
Free · In-app purchasesIn-app purchases
About this app
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.…
Preview
Real screenshots from the store listing.
Independent evidence report
Evidence and review signals
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
App Store
This analysis describes version 2.22.2 of the app, analyzed 2026-10-05 . The app may have changed since.
The store currently lists version 2.22.2, updated 2026-09-23.
Google Play
This analysis describes version 2.4.3 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 2.4.3, updated 2026-09-24.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
1 theme reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the package we scanned
From the package we downloaded and read — version 2.4.3, scanned 2026-09-17.
Permissions Android classifies as dangerous
1–2 requested
Counted against the eighteen permissions listed in collect-package.ts. A dangerous permission is one Android asks the user to grant; requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
1–2 found
Advertising SDKs in the scanned package
None found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
Positive evidence 2
Things this app does right, published at the same strengths as the catch list.
States a price, or offers a one-time purchase
The app's own text offers a one-time or lifetime purchase, or reviewers report that the price is stated clearly.
What we saw: Offers a one-time or lifetime purchase: "Pay a one-time fee to receive access to this exclusive theme for 1 month! (no recurring charges)"
Developer says data deletion can be requested
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
What we saw: The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
One source only — shown, not confirmed 4
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
In the app's own text: Aggressive ad load
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
What we saw: Progress is gated behind watching an ad: "Watch ad to get result"
Reported by users: Paywall blocks the basics
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
What we saw: Paywall blocks the basics: raised by 8 distinct reviewers (1.5% of 542 reviews scanned)
In the app's own text: A plan is pre-picked as 'recommended'
The purchase screen arrives with one plan already framed as the recommended or most popular choice, so the default is the app's preference rather than the user's. We do not compare the plans' prices, and only the app's own text evidences this, so it is shown, but never counted as a charge.
What we saw: Purchase screen steers the choice: "MOST POPULAR"
In the app's own text: Countdown-timer purchase pressure
The app's own purchase copy attaches a deadline to buying — a countdown, 'offer ends in', 'limited time' — or ships a countdown view on a purchase-screen layout.
What we saw: Deadline pressure in the app's own copy: "Offer ends in"
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“I don’t like this app — I don’t like this app because you have to pay for everything!”
“Stuuuuuupiiid:( — U have to Pay for everything you you only have two picks a day and various answers apparently but not to me there isn’t very many answers it doesn’t tell you how much it cost and also you have to pay to get any like good…”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 2.22.2.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown5
Lowest$3.99
Highest$69.99
Rock Identifier Premium$39.99
Rock Identifier Premium$3.99
Rock Identifier Premium$7.99
Rock Identifier Premium$29.99
Rock Identifier Premium$69.99
Google Play does not publish per-purchase prices.