--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "LUX - Illuminance Meter" developer_entity: "koji torishima" bundle_id: "com.kojiTo.illuminometer" app_store_id: "1631156210" category: "Productivity" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-06-23" report_date: "2026-08-10" last_verified: "2026-08-10T00:00:00.000Z" report_version: "2.3.0" total_reviews: 0 confidence: "low" confidence_score: 0.15 data_age_days: 51 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["productivity", "freemium", "mobile app", "app review", "app analysis", "indoor", "gardeners,", "aquarium"] canonical_url: "https://marlvel.ai/apps/lux-illuminance-meter" license: "CC-BY-NC 4.0" content_version: "v2" --- # LUX - Illuminance Meter Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Freemium > **TL;DR:** LUX - Illuminance Meter is a productivity app by koji torishima, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** LUX - Illuminance Meter is a productivity app by koji torishima. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Productivity | | **Developer** | koji torishima | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.15/1.0) | | **Data Age** | 51d | ## Metadata & Market Performance - **Publisher:** koji torishima - **Category:** Productivity - **Target Audience:** Indoor gardeners, aquarium hobbyists, and photography enthusiasts. - **Platforms:** iOS - **Version Reviewed:** 2.3.0 - **Report Date:** 2026-08-10 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.15/1.0) - **App Store ID (iOS):** 1631156210 - **Bundle ID:** com.kojiTo.illuminometer - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-10 ## Executive Snapshot **What it is:** LUX is a light meter app for iOS that measures illuminance and color temperature for photography and gardening enthusiasts. **Why users hire it:** Users hire LUX to verify light levels for plants or aquariums, replacing expensive hardware with a mobile-first measurement tool. ## App DNA (Features & Intent) - **[Standard] Instant Illuminance Measurement:** Real-time lux measurement displayed immediately upon app launch. - **[Differentiator] PPFD Reading:** Calculates Photosynthetic Photon Flux Density for plant lighting; high-value gate for Pro subscription. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} LUX occupies the productivity niche for specialized light measurement. The recent introduction of a lifetime purchase option signals a move to stabilize revenue against a 47-day update gap. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with ad support, Pro tier via subscription or lifetime purchase - **Analysis:** Freemium model gates data-intensive features like CSV export and PPFD behind a Pro subscription, now supplemented by a lifetime purchase option. ## SWOT Analysis {#swot} **Core Strengths:** - PPFD reading provides a defensible utility for the indoor gardening segment - Lifetime purchase option reduces switching costs for long-term users **Growth Levers:** - Automated light-scheduling alerts could increase daily active usage - Integration with smart-home lighting APIs could expand the user base ## Recent Changes (v2 → v3) {#recent-changes} The app's competitive posture has stabilized as the developer pivots toward one-time monetization and identifies specific growth opportunities in smart-home integration. **Overall trend**: Stable **Compared at**: 2026-08-10 ### High-impact changes - **[Added] Expanded SWOT Analysis** (swot) ### Medium-impact changes - **[Shifted] Outlook Trend** (positioning) - **[Shifted] PM Action Plan** (positioning) ## What's New - **Latest (v2.3.0, 1 months ago):** Introduced "Lifetime Pro" one-time purchase for ad-free access and advanced features, plus 7-day free trials for subscription plans. ## App Momentum (Maintenance) {#momentum} - Introduced Lifetime Pro purchase option. - Added 7-day free trial access. - Quiet 47 days, maintenance mode. > **Cadence:** 1 total versions · 1 majors in last 6 months · 47 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} LUX - Illuminance Meter is a productivity app that is free with in-app purchases. > **Bottom Line:** LUX secures its niche through specialized PPFD metrics, but the lack of recent feature iteration risks stagnation against more active rivals, so the PM should prioritize converting the existing hobbyist base via the new lifetime purchase option. **Best for:** Indoor gardeners, aquarium hobbyists, and photography enthusiasts. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Pivot the onboarding flow to highlight PPFD features because it is the primary differentiator for the plant-hobbyist segment → increase Pro conversion ### Outlook: Stable The market for specialized light-metering tools is consolidating around apps that offer both precision and ease of use. LUX is currently stable, but its lack of active development leaves it exposed to competitors who can iterate faster on the gardening-utility segment. - ⚪ The latest release introduced a lifetime purchase option, signaling a shift toward one-time revenue capture over recurring subscription growth. - 🔴 A 47-day update gap suggests the app is in maintenance mode, which limits the ability to respond to competitor feature drops. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **LUX - Illuminance Meter** (this app) | N/A/5 | N/A | koji torishima | | [Mitsu: AI Life Coach](https://marlvel.ai/apps/mitsu-ai-life-coach) | N/A/5 | N/A | C2 Insights | | [ChatGPT](https://marlvel.ai/apps/chatgpt) | 4.8/5 | n/a | OpenAI OpCo, LLC | | [HitWave](https://marlvel.ai/apps/ciendor-applications-hitwave) | 2.6/5 | Mixed | Ciendor Holdings Corp. LTD | | [Pattrn - Discipline Tracker](https://marlvel.ai/apps/pattrn-discipline-tracker) | 4.8/5 | Thrilled | Pedro Schott | | [SpaceDesk App](https://marlvel.ai/apps/spacedesk-app) | N/A/5 | N/A | Hawsabah | ## Company Profile - **Developer:** koji torishima - **Website:** [https://lux-support.web.app](https://lux-support.web.app) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/lux-illuminance-meter/id1631156210?uo=4) - **Dev Site:** [Official Website](https://lux-support.web.app) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Mitsu: AI Life Coach*](https://marlvel.ai/apps/mitsu-ai-life-coach) (C2 Insights) · N/A Rating - [*ChatGPT*](https://marlvel.ai/apps/chatgpt) (OpenAI OpCo, LLC) · 4.8/5 Rating - [*HitWave*](https://marlvel.ai/apps/ciendor-applications-hitwave) (Ciendor Holdings Corp. LTD) · 2.6/5 Rating - [*Pattrn - Discipline Tracker*](https://marlvel.ai/apps/pattrn-discipline-tracker) (Pedro Schott) · 4.8/5 Rating | Excellent Sentiment - [*SpaceDesk App*](https://marlvel.ai/apps/spacedesk-app) (Hawsabah) · N/A Rating - [*한음달-한국인에게 꼭 맞는 음력달력, 캘린더*](https://marlvel.ai/apps/app--103) (YunaSoft Inc.) · 4.6/5 Rating - [*바로메모 - 매일 바로 작성하는 메모장*](https://marlvel.ai/apps/cswpd-memo) (SuWon Choi) · N/A Rating - [*근로장려금 알리미 - 신청, 기준, 금액계산 가이드*](https://marlvel.ai/apps/com-swing2app-v3-d83e9bb95c05347f59ad81dea3b925ebf) (SY Company) · 3.8/5 Rating - [*통화관리솔루션 (부평구청용)*](https://marlvel.ai/apps/byto-bupyeong) (BYTO) · N/A Rating - [*시외버스터미널 예매가이드 - 시간표*](https://marlvel.ai/apps/com-rewd-metopcrent) (Multisoft app) · 4.1/5 Rating ## 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:** 0.15/1.0 (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:** 51 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/lux-illuminance-meter) Data licensed for AI Agent attribution under CC-BY-NC 4.0.