# Diamond Identifier Rock Tester — user reviews > 33 indexed App Store user reviews of Diamond Identifier Rock Tester by Vi Thuy Linh, rated 4.46/5 from 340 ratings. - Source: https://appshunter.io/ios/app/diamond-identifier-rock-tester/id6478292057/reviews - App overview in markdown: https://appshunter.io/ios/app/diamond-identifier-rock-tester/id6478292057.md - Rating breakdown: 5★ 269 · 4★ 14 · 3★ 25 · 2★ 7 · 1★ 25 ## What do users think of Diamond Identifier Rock Tester? Overall sentiment: negative **Pros** - 👍 User-friendly interface - 💰 Free version available - ✅ Occasionally accurate identifications **Cons** - ❌ Extremely poor accuracy rate - 💸 Expensive subscription (£13/week) - 🚫 Paywall blocks core functionality - 🎯 Misidentifies common stones consistently - 📊 Limited mineral database - 🔄 Inconsistent results across attempts - ⏱️ Slow loading times - 🤷 Provides multiple unhelpful options - 🖼️ Limited reference photos in database **Commonly reported bugs** - Identifies unrelated objects as valuable stones (selfies, walls, carpets as diamonds) - Cannot cancel subscription/trial membership - Fails to identify basic stones (amethyst, quartz, turquoise) - Identifies every mineral as Larimar - Inconsistent results when scanning same stone multiple times - App requires subscription before allowing any scans **Most requested features** - Correction/feedback mechanism to improve accuracy - Expanded mineral and gemstone database - More reference photos for stone variations (jasper, agate types) - Learning algorithm to adapt from user corrections - Make app completely free without paywall - Improve accuracy for certified gemstones ## Newest reviews (11 of 33) ### 1/5 — Want to cancel trial membership *2024-10-28* Want to cancel my trial membership… but there’s no way to cancel **Developer response:** Thank you for getting in touch! To cancel your subscription and any associated payments, please navigate to your Apple ID settings. ### 1/5 — Schlecht *2024-10-19, version 1.7* Er erkennt nicht einmal den Standard Kristall Amethyst👎🏻👎🏻👎🏻 ### 1/5 — Wildly inaccurate *2024-10-17, version 1.7* Easy to use app also free to find out it does not work ### 1/5 — Bro *2024-09-11* Terrible. It only has certain stones in data base. Couldn’t read turquoise, authentic or replica. **Developer response:** Hi. Thank you for your review and feedback, your opinion is important to our team. For more accurate recognition, please note that the photo should be taken in sufficient light, be clear and it is not desirable to have foreign objects besides the stone. ### 1/5 — 🔫🗡️💣⚔️⚔️⚔️⚔️🛡️🔪🪓🧨 *2024-09-04, version 1.6* Olum bedeva yapın şu uygulamayı düzgün bir şey yapın pü pü iğrenç ya yapmayın şunu bi düzgün eğlenelim ya iğrenç 1 yıldız Allah oyununuzu çarpsın pü berbat. ### 1/5 — Did not work *2024-08-01, version 1.5* I took pictures of my crystals and I was like oh this is fun and then I took a picture of myself on accident and it came up as a diamond so I took a picture of my wall and it came up as like this $20,000 thing so I took a picture of my carpet. It came up as another diamond does not work. Don’t get this app and I had a amethyst and it came up as quartz.🫲😕🫱 ### 1/5 — NOPE! *2024-08-01* Scanned a plain river rock and it told me it was topaz ### 1/5 — Awful *2024-07-30* The pictures I take look nothing like it matches that get pulled up on this app. I mean even a small child at the age of four could look at the picture that I take and look at what this app is telling me that the stone is and say that that’s not the same stone, this is worst identifying app I’ve ever had in my life! ### 1/5 — Schlecht *2024-07-29, version 1.5* Erkennt nicht mal die einfachsten Steine. Man kann sogar ein Foto von seiner Hose machen und er sagt das es ein 1000 + Karat Edel Stein ist . Das ist komplett dumm !!! ### 1/5 — No *2024-06-16* No ### 2/5 — It’s ok…. *2024-06-10* I don’t like how un accurate it is. I will put a rock under it and it will say it’s worth 100-600 dollars it still asked for money it’s ok but wouldn’t really recommend **Developer response:** Hello! Thank you for your feedback. To improve the recognition quality, please note that the image of the stone should be clear, without interfering background and with sufficient lighting. ## Most critical reviews (10 lowest-rated) ### 1/5 — Rock ID *2025-09-06* It identifies every mineral as Larimar! Not very good. **Developer response:** Hello, recognition relies on patterns the AI has learned. In some cases, it may need clearer input to identify correctly. ### 1/5 — To expensive and just terrible pls fix this *2025-05-03, version 1.9* Forces me to pay £13 pound a WEEK ### 1/5 — Nonsense *2025-04-10* I’ve downloaded a handful of these rock/crystal identifier apps now and I get a) the wrong stone b) a list of possibilities ( that doesn’t help me ) c) can’t identity or d) scanning the same rock on different apps and getting different results. Why would you pay money for these apps that don’t do what they are intended to **Developer response:** Hi there! Your experience matters to us. We're investigating the issue to enhance our recognition algorithms. ### 1/5 — I CANT EVEN GET IN *2025-03-22* I CANT EVEN GET IN THE APP WITHOUT PAYING A SUBSCRIPTION, ONE OF THE REVIEWS SAYS ITS COMPLETELY FREE MAKE IT COMPLETELY FREE PLEASE **Developer response:** Hello! We’re sorry if the ads or purchases are bothersome. They’re optional and allow us to keep improving the app for everyone. ### 1/5 — False *2025-03-07* This app cannot tell if diamonds are real I have a diamond and it’s certified by the GIA I downloaded this app to see if it’s accurate and it’s not I rate this app below one star **Developer response:** We’re sorry to hear you didn’t enjoy the experience, but we’re grateful for your feedback. The team is already working on improvements. ### 1/5 — Don’t waste your time *2025-02-25* I submitted 5 known gemstones with 0% accuracy! It was sooooo way off. Pics were very clear on white background. In fact, one picture I submitted was a stock photo from GIA. Not even close. **Developer response:** Hello! We are aware of the concerns and are actively working on solutions. ### 1/5 — Completely bogus *2025-02-23* Doesn’t work how do I cancel?! **Developer response:** Hello! You can easily cancel your subscription and payments through your Apple ID settings. ### 1/5 — Worthless app *2025-01-09* Worst app I’ve ever used. I’m not paying for this. **Developer response:** Hello! We deeply value your trust and are sorry for any inconveniences. Improvements are coming soon. ### 1/5 — Not accurate *2024-11-17* I tested 3 stones . All the results are wrong **Developer response:** Hi. Thank you for your feedback, your opinion is important to our team. For more accurate recognition, please note that the photo should be taken in sufficient light, be clear and it is not desirable to have foreign objects besides the stone. ### 1/5 — Doesn’t work *2024-10-28, version 1.8* Cant identify stones at all. Tried on diamonds and emeralds. Waste of time ;) ## Most praised reviews (10 highest-rated) ### 5/5 — Good *2024-11-08, version 1.8* Accurate ### 5/5 — Teşekkürler *2024-08-19, version 1.5* Çok güzel olmuş ### 5/5 — Loved everything in 2 minutes *2024-04-19* You could scan any rock and it would get it right love this app never deleting it 😀 and even better it’s one hundred percent Free no in app purchases like the other rock identifiers can’t wait to see this app go **Developer response:** Hello, our team is grateful for your appreciation! ### 4/5 — Ever seen *2024-08-11* Best that I’ve ever seen in my whole life **Developer response:** Hello! Thank you for your review - we are very pleased! And we are preparing a big update for you! ### 3/5 — Potential but limited *2024-11-02* It is user friendly, but not as accurate as one would like. It also has no correction options when you know what it is and the app is wrong. An adapting or learning process to strengthen your product would definitely be a benefit to this app. It has limited photos as well. An example would be the many many different types of jasper or the multiple agates that are available but only two photos in the app is discouraging. **Developer response:** Hello! Thank you for your input! We are constantly expanding our stone database and refining the AI models. Your feedback motivates us! ### 3/5 — Gut *2024-07-15, version 1.4* Erkennt manchmal falsch aber sonst sehr schön 😄 ### 3/5 — Unsure *2024-07-04* So far I’m not sure whether or not I like this app.it has gotten a few of my easily identified well known stones completely wrong. I am using the free version and not convinced I’m getting the paid version **Developer response:** Hello! Thank you for your feedback. To improve the recognition quality, please note that the image of the stone should be clear, without interfering background and with sufficient lighting. ### 2/5 — Apps *2025-01-18, version 1.8* I hate it who it tells u supscibe then if u scan a rock it comes up with 3 options. It’s a good app but please sort it out ### 2/5 — Ehh *2024-08-16* Don’t like it nothing like the add or bio LIKE HELLO get something else k please don’t buy it asks to buy stuff 24/7 And loading takes forever ### 2/5 — Hallo *2024-08-10, version 1.5* Ich habe ein Eisenerz im Sonnenlicht fotografiert und hat es nicht erkannt. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*