--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Gas Converter" developer_entity: "Linde GmbH" bundle_id: "com.linde.GasConverter" app_store_id: "681227665" category: "Productivity" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2019-03-13" report_date: "2026-08-18" last_verified: "2026-08-18T00:00:00.000Z" report_version: "2.4.1" total_reviews: 197 overall_rating: 4.7 sentiment: "Upset" sentiment_score: 10 confidence: "low" confidence_score: 0.3 top_complaint_theme: "Inaccurate conversion factors for liquid oxygen to gas volume lead to incorrect calculation results" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 44 momentum_velocity: "zombie" intelligence_version: 3 tags: ["productivity", "free", "upset sentiment", "mobile app", "app review", "app analysis", "professionals", "technicians", "working"] canonical_url: "https://marlvel.ai/apps/gas-converter" license: "CC-BY-NC 4.0" content_version: "v2" --- # Gas Converter Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Free - **Signal**: Rating 4.7 · Sentiment Upset - **Recent focus**: Inaccurate conversion factors for liquid oxygen to gas volume lead to incorrect calculation results (top complaint) > **TL;DR:** Gas Converter is a productivity app by Linde GmbH, rated 4.7/5 by 197 users, with Upset user sentiment (10/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Gas Converter faces Upset user sentiment (4.7/5 from 197 reviews), with users reporting inaccurate conversion factors for liquid oxygen to gas volume lead to incorrect calculation results as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.7/5 (197 reviews) | | **User Mood** | Upset | | **Category** | Productivity | | **Developer** | Linde GmbH | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.3/1.0) | | **Data Age** | 44d | ## Metadata & Market Performance - **Publisher:** Linde GmbH - **Category:** Productivity - **Target Audience:** Professionals and technicians working with industrial gases requiring quick unit conversions and physical property data. - **Platforms:** iOS - **Version Reviewed:** 2.4.1 - **Report Date:** 2026-08-18 - **Signal Count:** 1 review analyzed - **Confidence:** Low (0.3/1.0) - **App Store ID (iOS):** 681227665 - **Bundle ID:** com.linde.GasConverter - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-08-18 ## Executive Snapshot **What it is:** Gas Converter is a free utility for industrial technicians to calculate volumetric-to-weight conversions for 15 industrial gases on iOS. **Why users hire it:** The tool removes the need for manual reference tables during field work, but reported calculation errors currently undermine its primary utility. ## App DNA (Features & Intent) - **[Standard] Gas Unit Conversion:** Calculates volumetric to weight-based units for 15 industrial gases. - **[Differentiator] Physical Property Reference:** Displays enthalpy, boiling point, and temperature-specific values. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Three-Step Workflow:** Calculates results in three steps: select gas, select units, enter value. ## Market Position {#market-position} Gas Converter holds a 4.7-star rating across 197 total ratings, positioning it as a niche reference tool. The lack of updates since 2019 signals that the developer treats the app as a static brand asset rather than a competitive productivity product. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** Gas Converter is provided as a free utility to support existing industrial customers. ## 🔴 User Sentiment (Low Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 4.7/5 - **Platform Split:** iOS 4.7/5 (197 ratings) - **Overall Sentiment:** Upset - **Note:** The 4.7/5 store rating reflects cumulative history, while the Upset sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Complaints (Impact Areas) - **Inaccurate conversion factors for liquid oxygen to gas volume lead to incorrect calculation results** ## SWOT Analysis {#swot} **Core Strengths:** - 15-gas library provides specialized industrial reference - Three-step workflow minimizes field interaction friction **Growth Levers:** - Audit conversion math to restore professional utility ## Recent Changes (v2 → v3) {#recent-changes} The app's competitive position has declined as the developer's seven-year maintenance gap now explicitly creates professional liability risks. While the core feature set remains static, the framing of the tool has shifted from a legacy resource to a potential liability for industrial users. **Overall trend**: Declining **Compared at**: 2026-08-18 ### High-impact changes - **[Added] Professional Liability Risk** (swot) ### Medium-impact changes - **[Shifted] Market Context Pivot** (positioning) ### Low-impact changes - **[Added] Expanded Gas Support** (features) ## What's New - **Latest (v2.4.1, 7 years ago):** Applied corporate design branding updates. ## App Momentum (Zombie) {#momentum} - No feature updates since 2019. - Maintenance-only status for seven years. > **Cadence:** 1 total versions · 0 majors in last 6 months · 2714 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Gas Converter is a productivity app that is completely free. It holds a 4.7/5 rating from 197 reviews. > **Bottom Line:** Gas Converter functions as a legacy reference tool, but the reported calculation errors in the conversion logic invalidate its professional utility. Auditing the core math would restore the tool's reliability for existing industrial users, preventing further erosion of the developer's brand reputation. **Best for:** Professionals and technicians working with industrial gases requiring quick unit conversions and physical property data. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit conversion logic for liquid oxygen because users report factual errors → restore professional reliability ### Outlook: Declining The market for industrial utility tools is shifting toward active, cloud-connected platforms that provide real-time data updates. Gas Converter remains in a static state, which exposes the developer to professional liability risks due to uncorrected calculation errors. - 🔴 Reported calculation errors in the conversion logic erode professional trust, which limits the app's utility for technical field work. - 🔴 The seven-year update gap confirms a maintenance-only posture, leaving the app unable to address evolving technical standards or user feedback. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.7/5 | | Total Reviews | 197 | | Sentiment | Upset (10/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Gas Converter** (this app) | 4.7/5 | Upset | Linde GmbH | | [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:** Linde GmbH ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/gas-converter/id681227665?uo=4) - **Sources:** App store metadata, User reviews. ## 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. 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Users report that the conversion math for liquid oxygen is factually incorrect, which limits the app's reliability for professional technical work. ### How often does Gas Converter receive updates? The app has not received a feature update or bug fix since March 2019, indicating it is currently in a maintenance-only state. ### What gases are supported by Gas Converter? The app supports 15 industrial gases, including Oxygen, Nitrogen, Argon, Helium, Hydrogen, and several others like Ammonia and Methanol. ## 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:** 0.3/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, 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:** 44 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/gas-converter) Data licensed for AI Agent attribution under CC-BY-NC 4.0.