--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Rock Identifier by Picture ID" developer_entity: "Nguyen Kim Tuyen" bundle_id: "com.kt.cystalindentifier.picturethis" app_store_id: "1582182059" category: "Utilities" primary_platform: "ios" primary_monetization: "Subscription" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2024-05-14" report_date: "2026-08-25" last_verified: "2026-08-25T00:00:00.000Z" report_version: "2.3.0" total_reviews: 139 overall_rating: 3.1 confidence: "low" confidence_score: 0 data_age_days: 36 momentum_velocity: "zombie" intelligence_version: 3 tags: ["utilities", "subscription", "mobile app", "app review", "app analysis", "hobbyists", "collectors", "seeking"] canonical_url: "https://marlvel.ai/apps/rock-identifier-by-picture-id" license: "CC-BY-NC 4.0" content_version: "v2" --- # Rock Identifier by Picture ID Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Subscription - **Signal**: Rating 3.08 > **TL;DR:** Rock Identifier by Picture ID is a utilities app by Nguyen Kim Tuyen, rated 3.08/5 by 139 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Rock Identifier by Picture ID is a utilities app by Nguyen Kim Tuyen. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3.08/5 (139 reviews) | | **Category** | Utilities | | **Developer** | Nguyen Kim Tuyen | | **Pricing** | Subscription | | **Platforms** | iOS | | **Confidence** | Low (0/1.0) | | **Data Age** | 36d | ## Metadata & Market Performance - **Publisher:** Nguyen Kim Tuyen - **Category:** Utilities - **Target Audience:** Hobbyists and collectors seeking quick identification of rocks and minerals via mobile photography. - **Platforms:** iOS - **Version Reviewed:** 2.3.0 - **Report Date:** 2026-08-25 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0/1.0) - **App Store ID (iOS):** 1582182059 - **Bundle ID:** com.kt.cystalindentifier.picturethis - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-25 ## Executive Snapshot **What it is:** Rock Identifier by Picture ID is a mobile utility for identifying stones and minerals using AI image recognition on iOS. **Why users hire it:** The app removes the cognitive cost of manual mineral research by providing instant identification through mobile photography. ## App DNA (Features & Intent) - **[Standard] AI Stone Identification:** Image recognition engine identifies mineral and stone types from camera input or photo library uploads. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Standard] Stone Information Database:** Provides descriptive data and facts about identified stones. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Rock Identifier by Picture ID operates in the Utilities category with a subscription-only model. The lack of updates for over 830 days signals a maintenance-only posture that limits its ability to compete with active market entrants. ## Monetization Strategy - **Model:** Subscription - **Tiers:** Premium Weekly at $3.99, Premium Yearly at $49.99 - **Analysis:** Subscription-only model anchored at $3.99 per week, utilizing auto-renewable billing cycles to capture recurring revenue. ## SWOT Analysis {#swot} **Core Strengths:** - AI-driven image recognition provides functional utility for amateur geologists **Growth Levers:** - Freemium model with ad-supported identification could capture casual segments ## Recent Changes (v2 → v3) {#recent-changes} The product remains in a stagnant maintenance state with no feature or pricing updates. The primary shift is a change in internal strategic outlook from maintenance to a formal recommendation to sunset the application. **Overall trend**: Stable **Compared at**: 2026-08-25 ### High-impact changes - **[Shifted] Strategic Outlook** (positioning) ### Medium-impact changes - **[Added] Casual User Barrier** (swot) ## What's New - **Latest (v2.3.0, 2 years ago):** General performance optimizations and bug fixes. ## App Momentum (Zombie) {#momentum} - Maintenance mode for 27 months - No feature expansion since May 2024 > **Cadence:** 1 total versions · 0 majors in last 6 months · 832 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Rock Identifier by Picture ID is an utilities app. It holds a 3.08/5 rating from 139 reviews. > **Bottom Line:** Rock Identifier by Picture ID's subscription-only model limits its funnel to dedicated collectors, but the lack of updates since May 2024 suggests the product is in sunset mode, leaving it unable to compete with active rivals. **Best for:** Hobbyists and collectors seeking quick identification of rocks and minerals via mobile photography. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the subscription-only model because the 27-month maintenance gap prevents new feature growth → reduce churn pressure ### Outlook: Declining Users report: The mineral identification market is shifting toward freemium models with high-frequency database updates, leaving Rock Identifier by Picture ID exposed. The lack of development since May 2024 means the app will continue to lose relevance as rivals improve their AI accuracy and feature sets. - 🔴 The 27-month development gap indicates the product is in maintenance mode, which erodes user trust and long-term retention potential. - 🔴 Subscription-only pricing without recent feature updates creates a value mismatch that discourages new user acquisition and conversion. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3.08/5 | | Total Reviews | 139 | | Confidence | Low | | Pricing Model | Subscription | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Stable | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Rock Identifier by Picture ID** (this app) | 3.08/5 | N/A | Nguyen Kim Tuyen | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.9/5 | N/A | Cat Connect | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Free VPN by Free VPN .org™](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) | 4.5/5 | Mixed | Free VPN LLC | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.5/5 | Mixed | Fuxin Technology | | [Potatso](https://marlvel.ai/apps/potatso) | 4.4/5 | n/a | Potatso Lab LTD | ## Company Profile - **Developer:** Nguyen Kim Tuyen ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/rock-identifier-by-picture-id/id1582182059?uo=4) - **Sources:** App store metadata. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.9/5 Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) · 4.5/5 Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.5/5 Rating - [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) · 4.4/5 Rating - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) · 3.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*카톡 분석 - 오픈채팅, 카톡 채팅 분석, 통계, 검색*](https://marlvel.ai/apps/com-liger-katalkanalysispaid) (Park Sung Cheol) · N/A Rating - [*로또 황금번호 생성기*](https://marlvel.ai/apps/lotto-lottogold) (jaehwan lee) · N/A Rating - [*도사폰 (만세력 역학도구)*](https://marlvel.ai/apps/app--656) (Softchaser Company Limited) · 5.0/5 Rating ## Frequently Asked Questions {#faq} ### Is Rock Identifier by Picture ID free to use? The app is free to download, but it operates on a subscription-only model. Identification features are gated behind a $3.99 weekly or $49.99 yearly premium subscription. ### How does Rock Identifier by Picture ID compare to other identification apps? Unlike many competitors that offer freemium or ad-supported tiers, Rock Identifier by Picture ID requires a subscription for core functionality, which may be less suitable for casual users. ### Is Rock Identifier by Picture ID still being updated? No, the app has been in maintenance mode since May 2024, with no new features added in over 27 months. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 36 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/rock-identifier-by-picture-id) Data licensed for AI Agent attribution under CC-BY-NC 4.0.