--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "FermCalc Winemaking Calculator" developer_entity: "Stephen Gross" bundle_id: "com.fermcalc.ios" app_store_id: "6470156850" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2023-11-01" report_date: "2026-09-23" last_verified: "2026-09-23T00:00:00.000Z" report_version: "2.98.2" total_reviews: 4 overall_rating: 5 confidence: "low" confidence_score: 0.05 data_age_days: 8 momentum_velocity: "zombie" intelligence_version: 2 tags: ["utilities", "free", "mobile app", "app review", "app analysis", "amateur", "professional", "winemakers"] canonical_url: "https://marlvel.ai/apps/fermcalc-winemaking-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # FermCalc Winemaking Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 5 > **TL;DR:** FermCalc Winemaking Calculator is a utilities app by Stephen Gross, rated 5/5 by 4 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** FermCalc Winemaking Calculator is a utilities app by Stephen Gross. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 5/5 (4 reviews) | | **Category** | Utilities | | **Developer** | Stephen Gross | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.05/1.0) | | **Data Age** | 8d | ## Metadata & Market Performance - **Publisher:** Stephen Gross - **Category:** Utilities - **Target Audience:** Amateur and professional winemakers requiring precise chemical and volumetric calculations. - **Platforms:** iOS - **Version Reviewed:** 2.98.2 - **Report Date:** 2026-09-23 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.05/1.0) - **App Store ID (iOS):** 6470156850 - **Bundle ID:** com.fermcalc.ios - **Data Window:** Analysis based on signals collected up to 2026-09-23 ## Executive Snapshot **What it is:** FermCalc is a specialized winemaking utility for Android that provides technical calculators for chemical and volumetric adjustments. **Why users hire it:** Winemakers require precise, repeatable chemical calculations to ensure fermentation health, a need FermCalc serves by replacing manual, error-prone spreadsheet or paper-based methods. ## App DNA (Features & Intent) - **[Differentiator] Winemaking Calculation Suite:** Specialized calculators for chaptalization, acidity, and sulfite additions. - **[Differentiator] Hydrometer/Refractometer Integration:** Calculates alcohol content using specific gravity and refractive index data. - **[Differentiator] YAN Calculator:** Estimates nitrogen requirements for fermentation health. ## Market Position {#market-position} FermCalc holds a niche position in the Utilities category, maintaining a 5-star rating across 4 reviews. The lack of any store activity for over 1,000 days indicates a static market presence rather than an active competitive stance. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** FermCalc is distributed as a free utility with no in-app purchases or subscription tiers. ## SWOT Analysis {#swot} **Core Strengths:** - Specialized calculation suite for chaptalization and YAN estimation **Growth Levers:** - Cloud-based recipe storage would create a retention loop ## App Momentum (Zombie) {#momentum} - Dormant for 1,057 days. - No major releases since 2023. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1057 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} FermCalc Winemaking Calculator is an utilities app that is completely free. It holds a 5/5 rating from 4 reviews. > **Bottom Line:** FermCalc provides a specialized calculation suite, but the lack of development since 2023 risks obsolescence. A shift toward cloud-based recipe management would unlock a recurring engagement loop, preventing the user base from migrating to more active, modern alternatives. **Best for:** Amateur and professional winemakers requiring precise chemical and volumetric calculations. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit codebase for Android API compatibility because the app has been dormant for 1,057 days → prevent total failure ### Outlook: Declining The winemaking utility market is shifting toward integrated, cloud-connected platforms that offer recipe tracking alongside calculations. FermCalc remains exposed due to its static, offline-only design and lack of recent development, which will likely lead to churn as users seek tools that support modern mobile workflows. - 🔴 The 1,057-day update gap indicates a maintenance-only posture, which erodes user trust in the tool's long-term compatibility. - ⚪ The lack of active feature investment allows competitors to capture the market by offering cloud-sync and modern UX. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 5/5 | | Total Reviews | 4 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **FermCalc Winemaking Calculator** (this app) | 5/5 | N/A | Stephen Gross | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.8/5 | N/A | Cat Connect | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.6/5 | n/a | techlaim | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.5/5 | Mixed | Fuxin Technology | | [Gear Ratio Calculator & RPM](https://marlvel.ai/apps/cog-gear-ratio-calculator) | N/A/5 | N/A | Linh Phan Nhat Khanh | ## Company Profile - **Developer:** Stephen Gross ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/fermcalc-winemaking-calculator/id6470156850?uo=4) - **Sources:** App store metadata. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.5/5 Rating - [*Gear Ratio Calculator & RPM*](https://marlvel.ai/apps/cog-gear-ratio-calculator) (Linh Phan Nhat Khanh) · N/A Rating - [*NordVPN: VPN Fast & Secure*](https://marlvel.ai/apps/com-nordvpn-nordvpn) (Nordvpn S.A.) · 4.7/5 Rating - [*Pulley Calculator Easy*](https://marlvel.ai/apps/pulley-calculator-easy) (YAVUZ BULAMADIK) · N/A Rating - [*Track And Field Companion*](https://marlvel.ai/apps/track-and-field-companion) (Travis Menghini) · N/A Rating - [*VPN 365-Master WIFI Security*](https://marlvel.ai/apps/vpn-365-master-wifi-security) (vpn fast) · 4.6/5 Rating - [*VPN - Seal VPN Secure Proxy*](https://marlvel.ai/apps/vpn-seal-vpn-secure-proxy) (Starpass VPN Free) · 4.6/5 Rating | Positive Sentiment ## Frequently Asked Questions {#faq} ### Is FermCalc suitable for professional winemakers? Yes, FermCalc includes advanced calculators for chaptalization, acidity, and YAN estimation designed for both amateur and professional use. ### Does FermCalc require an internet connection? FermCalc is designed as a standalone utility, but it lacks cloud-sync features, meaning all data remains local to the device. ### Are there alternatives to FermCalc for winemaking? While FermCalc provides a comprehensive suite of calculators, users seeking modern features like cloud-sync or recipe management should look for updated, cross-platform winemaking apps. ## 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:** 0.05/1.0 (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:** 8 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/fermcalc-winemaking-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.