--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units" developer_entity: "Jian Yih Lee" bundle_id: "gamesappsfree.converter" app_store_id: "1070579072" category: "Productivity" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2015-12-30" report_date: "2026-08-06" last_verified: "2026-08-06T00:00:00.000Z" report_version: "1.0" total_reviews: 219 overall_rating: 4.3 confidence: "low" confidence_score: 0 data_age_days: 10 momentum_velocity: "zombie" intelligence_version: 3 tags: ["productivity", "free", "mobile app", "app review", "app analysis", "students,", "engineers,", "professionals"] canonical_url: "https://marlvel.ai/apps/simple-unit-converter-pro-measurement-and-conversi" license: "CC-BY-NC 4.0" content_version: "v2" --- # Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Free - **Signal**: Rating 4.34 > **TL;DR:** Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units is a productivity app by Jian Yih Lee, rated 4.34/5 by 219 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units is a productivity app by Jian Yih Lee. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.34/5 (219 reviews) | | **Category** | Productivity | | **Developer** | Jian Yih Lee | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0/1.0) | | **Data Age** | 10d | ## Metadata & Market Performance - **Publisher:** Jian Yih Lee - **Category:** Productivity - **Target Audience:** Students, engineers, and professionals requiring quick unit conversions across basic and technical measurement systems. - **Platforms:** iOS - **Version Reviewed:** 1.0 - **Report Date:** 2026-08-06 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0/1.0) - **App Store ID (iOS):** 1070579072 - **Bundle ID:** gamesappsfree.converter - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-06 ## Executive Snapshot **What it is:** Simple Unit Converter is a technical measurement utility for engineers and students on iOS, providing conversions across 15 categories. **Why users hire it:** The app serves users who require specialized technical units like dynamic viscosity and volumetric gas flow, which are often absent in mainstream, simplified conversion tools. ## App DNA (Features & Intent) - **[Standard] Multi-Category Conversion:** Calculates values across 15 categories including length, area, mass, temperature, and fluid dynamics. - **[Differentiator] Professional Measurement Support:** Includes specialized units like dynamic viscosity, kinematic viscosity, and volumetric gas flow. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Simple Unit Converter maintains a 4.3-star rating across 219 total ratings, reflecting a stable but aging user base. The lack of updates for over 3,800 days signals a complete absence of competitive pressure from the developer side. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is distributed as a free utility with no visible subscription or in-app purchase gates. ## SWOT Analysis {#swot} **Core Strengths:** - Specialized technical units like dynamic viscosity differentiate the tool for professional use. - Free-to-use model lowers the barrier for student adoption. **Growth Levers:** - Technical unit library provides a foundation for a modern, responsive conversion tool. ## Recent Changes (v2 → v3) {#recent-changes} The app's development status remains frozen, with no updates since 2015. The primary change is a strategic shift in the internal assessment, which now classifies the tool as a legacy asset to be sunset rather than maintained. **Overall trend**: Stable **Compared at**: 2026-08-06 ### High-impact changes - **[Shifted] Strategic Lifecycle Pivot** (positioning) ### Medium-impact changes - **[Added] Formalized SWOT Analysis** (swot) ## What's New - **Latest (v1.0, 10 years ago):** General functional improvements with no new features. ## App Momentum (Zombie) {#momentum} - Dormant development since December 2015. - Zero feature updates in ten years. > **Cadence:** 1 total versions · 0 majors in last 6 months · 3871 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units is a productivity app that is completely free. It holds a 4.34/5 rating from 219 reviews. > **Bottom Line:** Simple Unit Converter relies on its niche technical unit library to maintain relevance, but the decade-long development freeze makes it highly vulnerable to any modern rival that adds similar specialized measurement support. **Best for:** Students, engineers, and professionals requiring quick unit conversions across basic and technical measurement systems. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the current build because the 10-year maintenance gap prevents competitive feature parity → reallocate resources ### Outlook: Declining The market for conversion utilities is consolidating around apps that offer frequent updates and modern design. Simple Unit Converter remains exposed due to its static state, which will likely lead to a gradual decline in relevance as technical users migrate to tools with better support. - 🔴 The 10-year development freeze prevents the integration of modern UI standards, which accelerates user churn toward active, updated conversion tools. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.34/5 | | Total Reviews | 219 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Stable | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units** (this app) | 4.34/5 | N/A | Jian Yih Lee | | [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 | | [Pattrn - Discipline Tracker](https://marlvel.ai/apps/pattrn-discipline-tracker) | 4.8/5 | Thrilled | Pedro Schott | | [한음달-한국인에게 꼭 맞는 음력달력, 캘린더](https://marlvel.ai/apps/app--103) | 4.6/5 | N/A | YunaSoft Inc. | | [바로메모 - 매일 바로 작성하는 메모장](https://marlvel.ai/apps/cswpd-memo) | N/A/5 | N/A | SuWon Choi | ## Company Profile - **Developer:** Jian Yih Lee ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/simple-unit-converter-pro-measurement-and-conversion/id1070579072?uo=4) - **Sources:** 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 - [*Pattrn - Discipline Tracker*](https://marlvel.ai/apps/pattrn-discipline-tracker) (Pedro Schott) · 4.8/5 Rating | Excellent Sentiment - [*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 - [*スマホやめるにゃ*](https://marlvel.ai/apps/hiroto-nosnszone-nosnszone) (HIROTO TSUTSUSHIMA) · N/A Rating - [*プレゼンテーションなど タイマー*](https://marlvel.ai/apps/app--366) (MAKOTO SASAKI) · N/A Rating ## Frequently Asked Questions {#faq} ### Is Simple Unit Converter still updated in 2026? No, the app has not received any updates since its release in December 2015. ### Does Simple Unit Converter include specialized engineering units? Yes, the app includes specialized units such as dynamic viscosity, kinematic viscosity, and volumetric gas flow. ### Are there free alternatives to Simple Unit Converter? Yes, many modern conversion apps are available for free on the App Store that receive regular updates and feature modern interfaces. ## 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:** 10 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/simple-unit-converter-pro-measurement-and-conversi) Data licensed for AI Agent attribution under CC-BY-NC 4.0.