--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "ET Bluetooth Controller" developer_entity: "(주)한국공학기술연구원" bundle_id: "com.ketri.ETBluetoothController" app_store_id: "6502381688" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2024-08-08" report_date: "2026-08-27" last_verified: "2026-08-27T00:00:00.000Z" report_version: "1.1" total_reviews: 0 confidence: "low" confidence_score: 0.2 data_age_days: 56 momentum_velocity: "zombie" intelligence_version: 3 tags: ["utilities", "free", "mobile app", "app review", "app analysis", "students", "educators", "using"] canonical_url: "https://marlvel.ai/apps/et-bluetooth-controller" license: "CC-BY-NC 4.0" content_version: "v2" --- # ET Bluetooth Controller Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free > **TL;DR:** ET Bluetooth Controller is a utilities app by (주)한국공학기술연구원, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** ET Bluetooth Controller is a utilities app by (주)한국공학기술연구원. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Utilities | | **Developer** | (주)한국공학기술연구원 | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 56d | ## Metadata & Market Performance - **Publisher:** (주)한국공학기술연구원 - **Category:** Utilities - **Target Audience:** Students and educators using ET-Board hardware for software coding and IoT education. - **Platforms:** iOS - **Version Reviewed:** 1.1 - **Report Date:** 2026-08-27 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6502381688 - **Bundle ID:** com.ketri.ETBluetoothController - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-27 ## Executive Snapshot **What it is:** ET Bluetooth Controller is a utility for connecting and managing ET-Board educational hardware via Bluetooth on iOS. **Why users hire it:** It removes the technical barrier for students to monitor onboard analog sensors and exchange raw data with IoT hardware in classroom settings. ## App DNA (Features & Intent) - **[Differentiator] Analog Sensor Monitoring:** Displays real-time data from onboard variable resistor, light, and temperature sensors. * *User Intent:* Users need clear guidance to understand and adopt the product quickly. - **[Standard] Terminal Interface:** Sends and receives raw data values between the mobile device and the connected hardware. - **[Standard] Bluetooth Device Discovery:** Scans for nearby Bluetooth-enabled hardware for connection to the ET-Board. * *User Intent:* Users want to quickly find relevant content or features. ## Market Position {#market-position} ET Bluetooth Controller occupies a niche utility role for ET-Board users, with no public chart ranking data available to indicate broader market penetration. ## Monetization Strategy - **Model:** Free - **Tiers:** Free to download and use - **Analysis:** The app is provided as a free utility to support the sale and operation of proprietary educational hardware. ## SWOT Analysis {#swot} **Core Strengths:** - Proprietary hardware integration provides a dedicated, zero-friction interface for ET-Board users **Growth Levers:** - Expanding terminal interface to support cross-platform data logging for advanced student projects ## Recent Changes (v2 → v3) {#recent-changes} The app remains in a dormant state with no functional updates, but the competitive assessment has sharpened to emphasize the risk of displacement by modern, hardware-agnostic alternatives. **Overall trend**: Stable **Compared at**: 2026-08-27 ### High-impact changes - **[Shifted] Threat Profile Refinement** (swot) ### Medium-impact changes - **[Shifted] Outlook Narrative Shift** (positioning) ### Low-impact changes - **[Improved] FAQ Hardware Specificity** (features) ## What's New - **Latest (v1.1, 2 years ago):** Resolved functional issues within the filter screen. ## App Momentum (Zombie) {#momentum} - Dormant for over 24 months. - Last release shipped August 2024. > **Cadence:** 1 total versions · 0 majors in last 6 months · 748 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} ET Bluetooth Controller is an utilities app that is completely free. > **Bottom Line:** ET Bluetooth Controller serves its purpose as a hardware-specific utility, but the two-year update gap risks eventual obsolescence. Verifying OS compatibility would protect the existing user base without requiring a full feature overhaul. **Best for:** Students and educators using ET-Board hardware for software coding and IoT education. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit compatibility with current iOS versions because the app has been dormant for 24 months → prevent potential user churn ### Outlook: Stable The market for educational IoT utilities is shifting toward hardware-agnostic tools that offer frequent updates and broader device support. ET Bluetooth Controller remains stable for its current user base, but the lack of active development leaves it vulnerable to displacement by more modern, actively maintained alternatives. - ⚪ The two-year update gap indicates a maintenance-only posture, which limits the app's ability to adapt to future mobile OS requirements. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **ET Bluetooth Controller** (this app) | N/A/5 | N/A | (주)한국공학기술연구원 | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.9/5 | N/A | Cat Connect | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.6/5 | n/a | techlaim | | [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 | ## Company Profile - **Developer:** (주)한국공학기술연구원 - **Website:** [https://www.ketri.re.kr/ketri/intro/](https://www.ketri.re.kr/ketri/intro/) ## Data Sources & Links - **App Store ID:** 6502381688 - **Dev Site:** [Official Website](https://www.ketri.re.kr/ketri/intro/) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.9/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 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 - [*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 ET Bluetooth Controller compatible with non-ET-Board hardware? ET Bluetooth Controller is specifically designed for ET-Board hardware, and its features like analog sensor monitoring are mapped to that specific hardware's onboard components. ### Does ET Bluetooth Controller require a paid subscription? No, ET Bluetooth Controller is a free utility provided to support the operation of ET-Board hardware. ### What is a good alternative if I need a more frequently updated Bluetooth terminal? Users needing active development or broader hardware support should consider generic Bluetooth terminal apps available on the App Store, which often receive more frequent updates. ## 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:** 0.2/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** developer website, 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:** 56 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/et-bluetooth-controller) Data licensed for AI Agent attribution under CC-BY-NC 4.0.