--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "ChemE Calculator" developer_entity: "Bryan Tiedemann" bundle_id: "com.BryanTiedemann.ChemECalcs" app_store_id: "1329240890" category: "Productivity" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2018-04-05" report_date: "2026-09-05" last_verified: "2026-09-05T00:00:00.000Z" report_version: "4.0.3" total_reviews: 9 overall_rating: 4.9 confidence: "low" confidence_score: 0.2 data_age_days: 25 momentum_velocity: "zombie" intelligence_version: 3 tags: ["productivity", "free", "mobile app", "app review", "app analysis", "chemical", "engineers", "process"] canonical_url: "https://marlvel.ai/apps/cheme-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # ChemE Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Free - **Signal**: Rating 4.89 > **TL;DR:** ChemE Calculator is a productivity app by Bryan Tiedemann, rated 4.89/5 by 9 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** ChemE Calculator is a productivity app by Bryan Tiedemann. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.89/5 (9 reviews) | | **Category** | Productivity | | **Developer** | Bryan Tiedemann | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 25d | ## Metadata & Market Performance - **Publisher:** Bryan Tiedemann - **Category:** Productivity - **Target Audience:** Chemical engineers and process professionals requiring mobile access to thermodynamic data. - **Platforms:** iOS - **Version Reviewed:** 4.0.3 - **Report Date:** 2026-09-05 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 1329240890 - **Bundle ID:** com.BryanTiedemann.ChemECalcs - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-09-05 ## Executive Snapshot **What it is:** ChemE Calculator is a specialized productivity tool for chemical engineers to perform thermodynamic and steam table calculations on iOS devices. **Why users hire it:** The app removes the need to return to desktop simulation software for quick process checks, allowing engineers to maintain their workflow during meetings or field startup. ## App DNA (Features & Intent) - **[Differentiator] Thermodynamic Calculation Suite:** Calculates VLE, steam tables, and fluid properties using Peng-Robinson and IAPWS-IF97 equations. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Chemical Database Search:** Provides structure and molecular weight lookups via PubChem integration. * *User Intent:* Users want to quickly find relevant content or features. - **[Standard] Result Export:** Emails calculation inputs and results in HTML format for professional documentation. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} ChemE Calculator serves a narrow professional segment within the productivity category. With no updates since 2018, its market position relies entirely on the enduring utility of its thermodynamic models rather than active chart performance or feature growth. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is offered as a free utility with no monetization gates or subscription tiers. ## SWOT Analysis {#swot} **Core Strengths:** - Thermodynamic calculation suite using IAPWS-IF97 equations - HTML-based result export for professional documentation **Growth Levers:** - Cloud-based project storage for cross-device sync - Expanded chemical component database ## Recent Changes (v2 → v3) {#recent-changes} The app remains in a dormant state with no functional changes, though the competitive outlook has been updated to acknowledge the specific threat of browser-based thermodynamic tools. **Overall trend**: Stable **Compared at**: 2026-09-05 ### Medium-impact changes - **[Added] New Competitive Threats and Opportunities** (swot) ### Low-impact changes - **[Shifted] Outlook Narrative Adjustment** (positioning) ## What's New - **Latest (v4.0.3, 8 years ago):** Maintenance update addressing unit conversion calculator bugs and watchOS 27 compatibility. ## App Momentum (Zombie) {#momentum} - Dormant development for over 3000 days. - No feature updates since 2018. > **Cadence:** 1 total versions · 0 majors in last 6 months · 3074 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} ChemE Calculator is a productivity app that is completely free. It holds a 4.89/5 rating from 9 reviews. > **Bottom Line:** The app provides high-value thermodynamic modeling, but the lack of updates since 2018 leaves it vulnerable to platform obsolescence. Maintaining the current codebase is necessary to preserve the utility for existing professional users. **Best for:** Chemical engineers and process professionals requiring mobile access to thermodynamic data. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit codebase for iOS compatibility because the app has not been updated since 2018 → prevent total failure ### Outlook: Stable The thermodynamic calculation market is shifting toward browser-based tools that offer better cross-platform compatibility. ChemE Calculator remains a stable, specialized utility, but its long-term viability depends on basic maintenance to survive OS updates. - ⚪ The app has remained in maintenance mode for over eight years, indicating no intent for further feature expansion. - 🔴 The absence of updates since 2018 increases the risk of the app becoming incompatible with future iOS releases. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.89/5 | | Total Reviews | 9 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **ChemE Calculator** (this app) | 4.89/5 | N/A | Bryan Tiedemann | | [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 | | [Paper: Sketch, Draw & Create](https://marlvel.ai/apps/paper-sketch-draw-create) | 4.6/5 | N/A | Evernote Corporation | | [Pattrn - Discipline Tracker](https://marlvel.ai/apps/pattrn-discipline-tracker) | 4.8/5 | Thrilled | Pedro Schott | ## Company Profile - **Developer:** Bryan Tiedemann - **Website:** [https://erik.futbol/chemEcalcs](https://erik.futbol/chemEcalcs) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/cheme-calculator/id1329240890?uo=4) - **Dev Site:** [Official Website](https://erik.futbol/chemEcalcs) - **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 - [*Paper: Sketch, Draw & Create*](https://marlvel.ai/apps/paper-sketch-draw-create) (Evernote Corporation) · 4.6/5 Rating - [*Pattrn - Discipline Tracker*](https://marlvel.ai/apps/pattrn-discipline-tracker) (Pedro Schott) · 4.8/5 Rating | Excellent Sentiment - [*ScreenZen- Screen Time Control*](https://marlvel.ai/apps/screenzen-screen-time-control) (ScreenZen LLC) · 4.8/5 Rating | Excellent Sentiment - [*SpaceDesk App*](https://marlvel.ai/apps/spacedesk-app) (Hawsabah) · N/A Rating - [*VPN - Super Unlimited Proxy*](https://marlvel.ai/apps/vpn-super-unlimited-proxy) (Mobile Jump Pte Ltd) · 4.7/5 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 ## Frequently Asked Questions {#faq} ### Is ChemE Calculator suitable for professional use? Yes, it uses industry-standard IAPWS-IF97 steam tables and the Peng-Robinson equation of state, making it a reliable tool for quick thermodynamic calculations in professional settings. ### Does ChemE Calculator require an internet connection? The app is designed for mobile use and performs calculations locally, though it includes a database search feature that may require connectivity to access PubChem data. ### Are there any subscription fees for this app? No, ChemE Calculator is provided as a free utility with no monetization gates or subscription tiers. ## 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:** 25 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/cheme-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.