Comparison

Stone Gem & Crystal Identifier vs Code3000

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

Head to head
About

Stone Gem & Crystal Identifier

Identify rocks, gems, crystals, and diamonds with AI-powered accuracy. Get value estimations, authenticity checks, and detailed analysis of your finds. Discover hotspots and learn about the history of your treasures.

Highlights
  • AI-powered rock, gem, and crystal identification
  • Value estimation and authenticity check
  • Detailed mineral analysis
  • Diamond and gem valuation
  • Metal detector functionality
  • Ask AI experts for advice
  • Rarity score for finds
  • Hotspot discovery for rock hunting
Features
Read full description

Crystal Identifier: Diamond Rock Fossil Mineral ID Your ultimate companion for discovering Earth’s treasures, designed to make rock, gem, crystal, and diamond identification accurate, easy, and enjoyable for everyone—from curious beginners to expert collectors. Whether you’re identifying rocks, estimating value, or seeking expert advice, with rock-specific training dataset and content filters, our AI-powered app, Crystal Identifier, is here to guide you with confidence. Key Features: Highly accurate Rock, Gem, and Crystal Identification: Unveil the hidden world of rocks and gems with unmatched accuracy. Simply snap a photo of any rock, gem, crystal, or diamond, and Crystal Identifier will instantly provide detailed information, including its name, properties, and origins. Whether you’re hiking, rock hunting, or examining your collection at home, our advanced AI identifies your findings anytime, anywhere. Value Estimation & Authenticity Check: Curious about the value of your find? Crystal Identifier gives you up-to-date market value estimates based on clarity, size, and demand. You can even verify if a gemstone is natural or synthetic with cutting-edge authenticity analysis. Crystal & Mineral Analysis: Dive deeper into the chemical makeup and physical characteristics of your rocks and crystals. Gain a thorough understanding of your finds with detailed reports on their mineral composition. Diamond & Gem Valuation: Get expert-level valuations for diamonds and other precious gems with ease. Make informed decisions whether buying, selling, or simply adding to your collection. Metal Detector: Turn your phone into a functional magnetic metal detector to discover hidden treasures in the field, helping you find valuable items and magnetic metals during rock-hunting adventures. Expert Features: Ask the Rock & Gem Experts: Need advice on gem identification or care? Chat with AI-powered experts who can provide guidance on your finds, ensuring you make the most of your discoveries. Rarity Score: Ever wonder how rare your rock or gemstone is? Compare your finds with others worldwide and get a unique rarity score. Rock Hunting & Mining Hotspots: Discover the best locations for rock and gem hunting around you. Use our interactive map to find mining hotspots nearby and start your rock-hunting adventure today. Gemstone Origin & Historical Insights: Learn about the origins and historical background of each gem or crystal. Understand the journey of your stone from deep within the Earth to your collection. Why Choose Crystal Identifier? Professional Accuracy: Trusted by collectors and experts, Crystal Identifier delivers reliable and highly accurate results, ensuring that you confidently identify and value your rocks, gems, and crystals every time. Expert Advice: Get the support you need from AI-powered experts to expand your knowledge and enhance your collection with confidence. Educational & Fun: Whether for fun or research, Crystal Identifier provides an enriching learning experience for anyone passionate about rocks and gems. Legal Disclaimer: Crystal Identifier is powered by OpenAI’s AI technology and more to provide accurate identifications and value estimations. However, results may not be 100% accurate, and the app should be used for educational purposes. For official appraisals or certifications, please consult with a certified gemologist or appraiser. Download Crystal Identifier now and embark on an exciting journey of rock, gem, and crystal discovery. Explore, learn, and unlock the true potential of your collection today! Privacy Policy & Terms of Use Privacy Policy: https://mn-appstudio.com/privacy-policy/ Terms of Use: https://mn-appstudio.com/terms/

About

Code3000

Features
Read full description

Code3000 是專為亞洲軟體工程師打造的英文學習 App。從面試、relocation、職場到在美生活,一張一張情境對話卡片,累積真實能用的英文與美國文化語境。現在全功能免費。 【滑卡片 feed,看 micro-story】 3,000 字情境對話卡,每張都是一段 2-4 turns 的小故事——standup、PR review、跟 PM 喬規格、跟房東喬租約、和同事 happy hour。沒有單字表、沒有測驗,只有真實會發生的對話。 【長按查字,VSCode peek definition 風格】 不懂的單字長按一下,定義、IPA、詞性、文化備註一次到位,看完滑掉繼續。 【TTS + KTV 高亮】 聽 native voice 朗讀,逐字 highlight 跟著節奏唸,速度 0.3x ~ 0.6x 自由調整。 【跟讀對比】 錄下自己的發音,App 比對你跟範例的差異——錄音只在記憶體、不上傳、不留底。 【階段加權,貼合你現在的處境】 選擇 interview、relocation、settling、workplace、daily 五個階段,App 會優先送上你最需要的卡片。 【Siri 與捷徑】 「來一句」唸一句還沒學過的英文、「進度」查連續天數和今天讀了幾張、「開始練習」直接進 feed。 【Dark IDE 主題】 仿 VSCode Dark+ / GitHub Dark 風格,英文 body 用 SF Mono,學英文同時看著熟悉的 IDE 視窗。支援 iPhone Duo。 【為什麼選 Code3000】 - 完全離線,不需網路 - 無帳號、無雲端、無追蹤、無廣告 - 貼近真實工程文化與在美生活 【完全免費】 - 沒有訂閱、沒有付費牆,3,000 張卡片全部開放 - 喜歡的話,可以請開發者喝杯珍奶(選購,不解鎖任何功能) 開始滑卡,每天累積一點工程師的英文。 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Stone Gem & Crystal Identifier4 screens
Code30004 screens

Verdict

The call

The clearest difference is iOS requirement: Stone Gem & Crystal Identifier at 15.0 against Code3000's 26.0. 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. Stone Gem & Crystal Identifier sells 3 in-app purchases, starting at $7.99 per 7 days and Code3000 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Stone Gem & Crystal Identifier ships an update every 3 months, Code3000 every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Stone Gem & Crystal Identifier versus Code3000: the parameters behind the verdict, then further details
ParameterStone Gem & Crystal IdentifierCode3000
PriceFreeFree
Rating4.7 (59 ratings) — better—
Positive reviews81.8% of reviews—
Number of ratings59 — better—
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size23 MB11 MB
Age rating4+4+
DeveloperSAFE AI NETWORK PTE. LTD.ChihChuan Wang

In-app purchases

3 purchases

Stone Gem & Crystal Identifier

Subscriptions3
  • Rock Identifier Pro3 Days trial$7.997 Days
  • Rock Identifier Pro3 Days trial$9.991 Month
  • Rock Identifier Pro$29.991 Year
3 purchases

Code3000

One-time3
  • Small Bubble Tea$1.99
  • Medium Bubble Tea$4.99
  • Large Bubble Tea$9.99

Questions

Is Stone Gem & Crystal Identifier free?
Stone Gem & Crystal Identifier is free to download, with in-app purchases available.
Is Code3000 free?
Code3000 is free to download, with in-app purchases available.
Do Stone Gem & Crystal Identifier or Code3000 have ads?
Neither Stone Gem & Crystal Identifier nor Code3000 shows ads.
Which is updated more often, Stone Gem & Crystal Identifier or Code3000?
Stone Gem & Crystal Identifier ships an update every 3 months, and Code3000 every 2 months. Most recently, Stone Gem & Crystal Identifier was updated on October 30, 2026 and Code3000 on October 31, 2026.

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