# Real Diamond Tester: Gemstone — user reviews > 38 indexed App Store user reviews of Real Diamond Tester by Nguyen Thuy Duong, rated 4.49/5 from 780 ratings. - Source: https://appshunter.io/ios/app/real-diamond-tester-gemstone/id6476104287/reviews - App overview in markdown: https://appshunter.io/ios/app/real-diamond-tester-gemstone/id6476104287.md - Rating breakdown: 5★ 628 · 4★ 45 · 3★ 32 · 2★ 11 · 1★ 64 ## What do users think of Real Diamond Tester? Overall sentiment: negative **Pros** - ⭐ Consistent gem/mineral identification **Cons** - 🚫 Inconsistent results when scanning the same stone - 💰 Expensive subscription required to access full features - 📢 Excessive ads - 🔒 Difficult to cancel subscription - ❌ Doesn't work as advertised **Commonly reported bugs** - Unable to take photos or scan rocks - Incorrect gem/mineral identification **Most requested features** - Ability to cancel subscription - More accurate and consistent gem/mineral identification ## Newest reviews (17 of 38) ### 1/5 — Garbage *2025-03-11, version 1.7* Zero percent accurate ### 1/5 — Terrible *2025-01-27* This has got to be the worst app known. Got the stones wrong every single time. Every time you scan the same stone, it would come up with a different gem/mineral every time. **Developer response:** Thank you for your honesty. We know this isn’t ideal, but we’re taking immediate action to resolve the issue. ### 1/5 — Not consistent *2025-01-15* It gave me a different answer every time I scanned the same stone ### 1/5 — Please cancel my account its dosnt help *2025-01-02* 0 **Developer response:** Thank you for getting in touch! To cancel your subscription and any associated payments, please navigate to your Apple ID settings. Don't hesitate to reach out if you need further help! ### 1/5 — It’s another scam to get your money *2024-12-10* This app is filled with ads, if you don’t want the ads to appear you have to subscribe on a monthly basis. There is a free trial for a short time but in order to try you have to give up all kinds of personal al information. Not worth it for me, rather go to the local jewelry store. **Developer response:** We rely on ads and in-app purchases to keep our core features free. This allows us to continually develop and maintain the app. ### 1/5 — My Diamond is a purple crystal? *2024-12-09, version 1.7* I took 4 photos of the same ring and got 4 different stones. Ranging from $50.00 to $100,00.00. So stupid ### 1/5 — Do not get this app it's horrible *2024-10-30* I got the app hoping to see if I could check if a piece of jewelry is real but all I got was pop up ads. When I finally got to the actual app it didn't even let me do anything. You also have to get premium to do anything. This app is a scam do not use it. ### 1/5 — Does not identify gem, mineral, or rock *2024-08-21* Simply for cataloguing. Not worth the money if the features don’t help identify. Seems odd. **Developer response:** Hello! Thank you for your feedback! We're constantly working to improve accuracy and appreciate your insights. ### 1/5 — Didn’t even work without an immediate charge *2024-08-03* While it is cheap, I don’t find myself using this app for more than 5 minutes at a time. Also don’t see why there’s a need to immediately charge me and force me into a subscription before I even get a chance to see if the application works and is legit. Could literally go to my local jeweler for free and get my diamonds checked. Kind of ridiculous. **Developer response:** Hi there! We're sorry for the inconvenience. Our team is dedicated to improving recognition accuracy. ### 1/5 — Pay to use *2024-06-26* Ads are non stop. Awful app **Developer response:** Hi. There is a small amount of advertising in the app and only for those users who use the app without a subscription. You can use the subscription and the three-day free version to have access to all the functionality without ads. ### 1/5 — No cancel subscription button *2024-06-10, version 1.4* You can delete account but not subscription. Please help cancel subscription. ### 1/5 — It’s a scam *2024-06-08, version 1.4* Do not purchase ### 1/5 — DO NOT DOWNLOAD!!!😭😭😭 *2024-06-05, version 1.4* 1 Star because it is FAKE🚫🚫🚫 ### 1/5 — Whole games, a scam and the ads are also a scam *2024-05-18* I was looking to see if this game will scam so I tested a rock that I already knew what it is and it said it was something else and I and then I tested pirate and it said there was two different things one it said one thing at first and then another at the second time when the real rock with pirate **Developer response:** Hello! We appreciate your feedback. For a more accurate description, please make sure that the conditions for receiving the photo have been met. You need sufficient lighting, most of the photo should be a stone, no foreign objects in the background. Try again with the recommendations - we hope this time you will get a more accurate result! ### 1/5 — Cancellation *2024-05-15* Can’t find how to cancel subscription **Developer response:** Hello, Subscriptions management is located in your App Store profile. ### 1/5 — 😡😡😡😡😡😡🍓🍓🍓🍓🍓 *2024-05-14, version 1.2* Don’t buy it you can’t delete it ### 1/5 — Say *2024-04-27* Why do we got to pay **Developer response:** Hello! The app has a three-day free trial period. You can use it to make a decision about further subscription. ## Most critical reviews (10 lowest-rated) ### 1/5 — Horrible scam *2025-09-09* This is absolutely trash, doesn’t even work, just desperate for money, horrible scam do not buy ### 1/5 — So wrong *2025-05-28, version 1.8* 3 out 4 wrong ### 1/5 — Little sleight of hand at the last second! *2025-05-27, version 1.8* So went to sign up for the 3 day free trial and after that it would cost $9.99 per week after that. I forgot to update my card info on my Apple Pay so I had to enter in my security code and expiration for my card. So I did and then it brought me back to the app. Was about to hit continue to sign up for the free trial when I noticed the total per week had now changed to $12.99 per week instead of the $9.99 like it was literally 2 minutes earlier. I can’t stand that last min sleight of hand trying to pull a fast one on you. I wouldn’t trust this app if I were you. ### 1/5 — Doesn’t work *2025-05-09* Tested with some stones I know are real and it said they weren’t so waste of time **Developer response:** Hello! Sorry to hear about your experience! We understand the importance of accuracy and are already planning updates to enhance the recognition quality. ### 1/5 — Joke *2025-04-07* Try to cancel this app…it’s impossible… ### 1/5 — Worst App Ever *2025-04-05* Posted a crystal clear picture of a confirmed real diamond and it said it was sodalite. Tried again with a confirmed blue topaz and it said it was agate. This thing is awful and not worth the money or time. **Developer response:** Hello! Thank you for your input! We are constantly expanding our stone database and refining the AI models. Your feedback motivates us! ### 1/5 — Paid and immediately regretted *2025-03-31* Didn’t even work I used multiple different items and it didn’t read not 1 correct! **Developer response:** Hi there! Thank you for sharing your thoughts! We are continuously improving our stone database and recognition algorithms to meet users’ needs. ### 1/5 — Hasn’t gotten a single stone matched correct *2025-03-30* Want my refund of 13$ back **Developer response:** Hello! Thank you for your patience; we're addressing these issues as quickly as possible. ### 1/5 — FAIL *2025-03-29, version 1.8* Doesn’t do what it says ### 1/5 — Easy to use but has not yet accurate *2025-03-26* App is easy to use, but not yet recognized anything presented. No longer of use to me! **Developer response:** Hello! Your experience matters to us. We're investigating the issue to enhance our recognition algorithms. ## Most praised reviews (5 highest-rated) ### 5/5 — One rock Is apparently 4 different rocks *2024-04-27, version 1.2* This app is garbage 7 pics and all times different stone …… don’t pay it’s garbage ! ### 3/5 — Something I cannot do *2024-07-27* The picture I identifier doesn’t work underrated sadly **Developer response:** Hello! Your feedback is essential! We’re analyzing the recognition issues to enhance the app. ### 3/5 — I mean it’s ok but... *2024-06-03* You need to stop charging every one I am going to give it 3 stars if you don’t change it it’s going to be 1 star **Developer response:** Hi. You can cancel your subscription in your personal App Store account in the Subscriptions section. ### 2/5 — i can’t access anything but one thing on the app *2024-05-23* it said i can scan rocks but i can’t and that’s the entire reason i got the app **Developer response:** Hello, please check if you have granted access to your phone's camera. We also recommend to update the application to the latest version. ### 2/5 — Doesn’t WORK!!! *2024-04-07, version 1.2* The app doesn’t work right! I tested a few different rocks that I new what they were, and it said totally different rocks for some of them! Plus, paying for it is totally NOT worth it!!!! At least it tells you the price for the type of stone.(but the wrong type!) Also there are so many annoying adds!!!! 😡😡😡😡😡 --- *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.*