--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Sensor Data Recorder" developer_entity: "Nils Ackermann" bundle_id: "de.digitalmoom.ActivityTracker" app_store_id: "1438400138" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2022-12-23" report_date: "2026-08-15" last_verified: "2026-08-15T00:00:00.000Z" report_version: "1.20" total_reviews: 3 overall_rating: 2.3 sentiment: "Thrilled" sentiment_score: 90 confidence: "medium" confidence_score: 0.45 top_praise_theme: "The application provides a straightforward and free experience that delivers exactly what it promises users" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 14 momentum_velocity: "zombie" intelligence_version: 3 tags: ["utilities", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "developers", "researchers", "requiring"] canonical_url: "https://marlvel.ai/apps/sensor-data-recorder" license: "CC-BY-NC 4.0" content_version: "v2" --- # Sensor Data Recorder Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 2.33 · Sentiment Thrilled - **Recent focus**: The application provides a straightforward and free experience that delivers exactly what it promises users (top praise) > **TL;DR:** Sensor Data Recorder is a utilities app by Nils Ackermann, rated 2.33/5 by 3 users, with Thrilled user sentiment (90/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Sensor Data Recorder maintains Thrilled user sentiment (2.33/5 from 3 reviews), with users consistently praising the application provides a straightforward and free experience that delivers exactly what it promises users. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 2.33/5 (3 reviews) | | **User Mood** | Thrilled | | **Category** | Utilities | | **Developer** | Nils Ackermann | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 14d | ## Metadata & Market Performance - **Publisher:** Nils Ackermann - **Category:** Utilities - **Target Audience:** Developers and researchers requiring a mobile-based tool to collect labeled sensor and audio data for machine learning projects. - **Platforms:** iOS - **Version Reviewed:** 1.20 - **Report Date:** 2026-08-15 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 1438400138 - **Bundle ID:** de.digitalmoom.ActivityTracker - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-15 ## Executive Snapshot **What it is:** Sensor Data Recorder is a utility for developers and researchers to capture labeled gyroscope, accelerometer, and audio data on iOS devices. **Why users hire it:** It removes the connectivity dependency and privacy risks of cloud-based logging by keeping all sensor data local to the device. ## App DNA (Features & Intent) - **[Standard] Sensor Data Recording:** Captures gyroscope and accelerometer data directly from the device CoreMotion module at user-defined frequencies. - **[Differentiator] Parallel Audio Capture:** Records microphone audio simultaneously with motion sensor data for multi-modal dataset creation. - **[Differentiator] Data Labeling:** Assigns custom labels to recordings to prepare datasets for machine learning or deep learning workflows. * *User Intent:* Users value self-expression and personalized experiences. ## Market Position {#market-position} Sensor Data Recorder holds a niche position in the Utilities category, serving a specialized developer audience with a 2.33 rating across three total reviews. The lack of updates since 2022 signals a stagnant market position relative to active data-collection tools. ## Monetization Strategy - **Model:** Free - **Tiers:** Free utility with no stated in-app purchases - **Analysis:** The app operates as a free utility with no observable monetization mechanisms. ## 🟢 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 2.33/5 - **Platform Split:** iOS 2.3/5 (3 ratings) - **Overall Sentiment:** Thrilled - **Note:** Despite a 2.33/5 store rating, recent user reviews show Thrilled sentiment based on our AI analysis. ### Top Praises - **The application provides a straightforward and free experience that delivers exactly what it promises users** ## SWOT Analysis {#swot} **Core Strengths:** - Local-only storage removes privacy-compliance barriers **Growth Levers:** - Real-time visualization would improve usability ## What's New - **Latest (v1.20, 3 years ago):** Introduced Dark Mode support. ## App Momentum (Zombie) {#momentum} - Dormant for 1331 days. - Last release December 2022. > **Cadence:** 1 total versions · 1 majors in last 6 months · 1331 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Sensor Data Recorder is an utilities app that is completely free. It holds a 2.33/5 rating from 3 reviews. > **Bottom Line:** Users report: Sensor Data Recorder serves a specific research need via its local-first data capture, but the multi-year inactivity creates a technical-debt risk for long-term projects. Maintaining the current codebase as a stable, open-utility asset is the only viable path forward. **Best for:** Developers and researchers requiring a mobile-based tool to collect labeled sensor and audio data for machine learning projects. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit background-process compatibility because the three-year release gap risks session termination on modern OS versions → maintain core utility ### Outlook: Stable The market for specialized data-logging utilities is consolidating around tools with active maintenance and cloud-sync capabilities. Sensor Data Recorder remains a niche, stable option for local-only needs, but its lack of updates will eventually force users to migrate to more active alternatives. - 🔴 The 1331-day update gap suggests the tool is in maintenance mode, which risks compatibility failures as iOS evolves. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 2.33/5 | | Total Reviews | 3 | | Sentiment | Thrilled (90/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Sensor Data Recorder** (this app) | 2.33/5 | Thrilled | Nils Ackermann | | [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) | 4.4/5 | Mixed | Fuxin Technology | | [Potatso](https://marlvel.ai/apps/potatso) | 4.4/5 | n/a | Potatso Lab LTD | ## Company Profile - **Developer:** Nils Ackermann - **Website:** [https://www.sensordatarecorder.digitalmoom.de](https://www.sensordatarecorder.digitalmoom.de) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/sensor-data-recorder/id1438400138?uo=4) - **Dev Site:** [Official Website](https://www.sensordatarecorder.digitalmoom.de) - **Sources:** Developer website content, App store metadata, User reviews. ## 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) · 4.4/5 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) · 4.5/5 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 Sensor Data Recorder free to use? Yes, Sensor Data Recorder is a free utility with no in-app purchases or subscription requirements. ### Does Sensor Data Recorder upload my data to the cloud? No, the app is designed to keep all data local to your device, and it does not upload recordings to a central server. ### Can I use the recorded data for machine learning? Yes, the app is specifically designed to export data in CSV and m4a formats, which are compatible with common machine learning workflows in Python. ## 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:** 0.45/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, 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:** 14 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sensor-data-recorder) Data licensed for AI Agent attribution under CC-BY-NC 4.0.