--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Electrical Formulator" developer_entity: "Historycentral.com" bundle_id: "net.multieducator.EFormulator" app_store_id: "299749412" category: "Productivity" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2025-06-09" report_date: "2026-06-29" last_verified: "2026-06-29T12:46:09.751Z" report_version: "6.0" total_reviews: 1 overall_rating: 5 sentiment: "Upset" sentiment_score: 15 confidence: "low" confidence_score: 0.5 top_praise_theme: "Educational utility during apprenticeship training provides significant value for students learning electrical and instrumentation concepts" top_complaint_theme: "Inaccurate calculation results lead to professional embarrassment and distrust in the reliability of the provided formulas" top_request_theme: "Logical categorization of electrical formulas to improve navigation speed and reduce the need for long scrolling" review_sample_size: 15 total_review_count: 15 analyzed_review_count: 15 data_age_days: 3 momentum_velocity: "maintenance" intelligence_version: 3 nemesis: "Electrical Calculations" competitor_count: 3 tags: ["productivity", "freemium", "upset sentiment", "mobile app", "app review", "app analysis", "engineers,", "electricians,", "energy"] canonical_url: "https://marlvel.ai/apps/electrical-formulator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Electrical Formulator App Audit ## TL;DR {#tldr} - **Category**: Productivity · Freemium - **Signal**: Rating 5 · Sentiment Upset - **Recent focus**: Inaccurate calculation results lead to professional embarrassment and distrust in the reliability of the provided formulas (top complaint) · Educational utility during apprenticeship training provides significant value for students learning electrical and instrumentation concepts (top praise) · Logical categorization of electrical formulas to improve navigation speed and reduce the need for long scrolling (top request) > **TL;DR:** Electrical Formulator is a productivity app by Historycentral.com, rated 5/5 by 1 users, with Upset user sentiment (15/100), available on iOS. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Electrical Formulator faces Upset user sentiment (5/5 from 1 reviews), with inaccurate calculation results lead to professional embarrassment and distrust in the reliability of the provided formulas as the primary user concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 5/5 (1 reviews) | | **User Mood** | Upset | | **Category** | Productivity | | **Developer** | Historycentral.com | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.5/1.0) | | **Data Age** | 3d | ## Metadata & Market Performance - **Publisher:** Historycentral.com - **Category:** Productivity - **Target Audience:** Engineers, electricians, and energy professionals requiring mobile access to technical electrical formulas. - **Platforms:** iOS - **Version Audited:** 6.0 - **Audit Date:** 2026-06-29 - **Signal Count:** 15 reviews analyzed - **Confidence:** Low (0.5/1.0) - **App Store ID (iOS):** 299749412 - **Bundle ID:** net.multieducator.EFormulator - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-06-29 ## Executive Snapshot **What it is:** Electrical Formulator is a mobile utility for electrical engineering calculations, serving students and professionals on iOS. **Why users hire it:** Users hire the app to perform field-ready electrical conversions and motor sizing, but the tool fails to deliver the accuracy required for professional trust. ## App DNA (Features & Intent) - **[Standard] Electrical Calculation Library:** Access to over 100 professional-grade formulas covering batteries, motors, transformers, and Ohm's law. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Result Management:** Save, organize, and print calculation results for future reference. - **[Standard] Sharing Tools:** Export calculation results via email or print. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Standard] Recent and Favorite Formulas:** Highlights most-used and recently accessed formulas for faster navigation. ## Market Position {#market-position} The app maintains a 5-star rating on a single review, masking deep-seated user distrust regarding calculation accuracy. The lack of significant review volume relative to incumbents signals a failure to capture the professional market. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier limited to twelve calculations, Subscription tier for unlimited access - **Analysis:** Freemium model uses a hard count-based gate on formulas to drive conversion to a subscription. ## 🔴 User Sentiment (Low Confidence: 15 of 15 reviews analyzed) {#user-sentiment} - **Overall Rating:** 5/5 - **Platform Split:** iOS 5.0/5 (1 ratings) - **Overall Sentiment:** Upset - **Note:** The 5/5 store rating reflects cumulative history, while the Upset sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Praises - **Educational utility during apprenticeship training provides significant value for students learning electrical and instrumentation concepts** ### Top Complaints (Impact Areas) - **Inaccurate calculation results lead to professional embarrassment and distrust in the reliability of the provided formulas** - **Technical failures prevent the application from launching or updating correctly on the device after installation** - **Poor user interface design makes navigating the extensive list of formulas confusing and inefficient for daily use** ### Top Requests (What Users Want) - **Logical categorization of electrical formulas to improve navigation speed and reduce the need for long scrolling** ## SWOT Analysis {#swot} **Core Strengths:** - Automatic calculation saving creates persistent user database - Multi-platform utility for field, lab, and classroom **Critical Frictions:** - High-frequency reports of inaccurate calculation outputs - 15-review sample size indicates low market penetration - Persistent launch failures following the latest update **Growth Levers:** - Implement logical formula categorization to reduce navigation friction - Target apprenticeship programs for B2B distribution **Market Threats:** - Established incumbents with deeper formula databases - Professional distrust stemming from calculation errors ## Recent Changes (v2 → v3) {#recent-changes} The app moved to a freemium monetization model while facing increased scrutiny over calculation reliability and technical stability. **Overall trend**: Declining **Compared at**: 2026-06-29 ### High-impact changes - **[Shifted] Monetization Model** (pricing) — Pricing model changed from free to freemium, introducing a hard gate after twelve calculations. - **[Declined] User Sentiment** (sentiment) — Sentiment shifted from neutral to negative, with new critical complaints regarding calculation inaccuracies and launch failures. ### Medium-impact changes - **[Added] Formula Navigation** (features) — Added 'Recent and Favorite Formulas' to the feature list to improve navigation speed. - **[Added] SWOT Analysis** (swot) — Added formal SWOT analysis identifying calculation inaccuracy and launch failures as primary weaknesses. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Electrical Formulator vs Electrical Calculations — Head to Head - **[Electrical Calculations](https://marlvel.ai/apps/electrical-calculations)** by Egal Net di Ettore Gallina: With over 48,000 reviews and a consistent release cadence, this app dominates the electrical calculation niche by providing a comprehensive, long-standing utility that users rely on for daily professional tasks. - **Moat strength:** High — sustainable advantage over 12 months - **Key differences:** - Offers a massive library of specialized electrical formulas that covers almost every standard engineering calculation requirement. - Maintains a high-frequency update cycle that ensures compliance with evolving international electrical standards and regulations. - Provides a mature, battle-tested interface that has been refined over a decade of user feedback loops. - **Where Electrical Formulator wins:** - ✅ Offers a more modern, streamlined UI design that reduces the cognitive load for casual electrical calculations. - ✅ Provides a more intuitive workflow for saving and exporting custom calculation results for professional documentation. - **Where Electrical Calculations wins:** - ❌ Features a significantly deeper database of niche electrical formulas that the target app currently lacks. - ❌ Benefits from a massive, established user base that provides a continuous stream of real-world testing data. - **Verdict:** The target app must prioritize expanding its formula library to match the breadth of this incumbent while leveraging its superior UI to capture users frustrated by the nemesis's legacy complexity. ### Contenders (Strong Challengers) - **[Ugly's Electrical References](https://marlvel.ai/apps/com-ascendlearning-uglys)** by Informed Publishing [Moat: Medium]: This app leverages a highly trusted industry brand name to provide authoritative, code-compliant electrical reference data to professionals. - Integrates authoritative, industry-standard reference material directly into the calculation workflow for immediate code compliance verification. - Positions itself as a professional-grade tool for licensed electricians rather than a general-purpose utility for hobbyists. ### Peers (What They Do Better) - **[Voltage Drop Calculator.](https://marlvel.ai/apps/voltage-drop-calculator)** by V PUGAZHENTHI: This app serves the same productivity category but focuses on a specific, high-utility sub-task rather than a broad suite of tools. - Specializes exclusively in voltage drop analysis, providing a more focused and simplified experience for that specific task. - Operates as a lightweight utility that avoids the bloat of a comprehensive, multi-tool electrical formulator. ## App Momentum (Maintenance) {#momentum} - Rewrote application interface in latest release. - Added export capabilities for results. > **Cadence:** 5 total versions · 0 majors in last 6 months · 329 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Electrical Formulator is a challenged productivity app that is free with in-app purchases. With a 5/5 rating from 1 reviews, it faces significant user friction. > **Bottom Line:** The app is failing to deliver basic calculation reliability, because users report incorrect outputs, so the PM must prioritize a full audit of the formula library to prevent total abandonment. **Best for:** Engineers, electricians, and energy professionals requiring mobile access to technical electrical formulas. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] [HIGH IMPACT] Audit all 100+ formulas because calculation inaccuracy is the top complaint → restore professional trust — *Users report inaccurate outputs causing professional embarrassment.* _(trade-off: deprioritize Pause the UI navigation redesign — formula accuracy is the existential risk.)_ - [ ] [INVEST] [HIGH IMPACT] Ship stability hotfix because launch failures are the #2 complaint → reduce churn — *Users report the app fails to open post-update.* _(trade-off: deprioritize Delay the new export capability rollout — stability is the baseline requirement.)_ ### Feature Gaps vs Competitors - Deep database of niche formulas (available in Electrical Calculations) - Code-compliant reference material (available in Ugly's Electrical References) ### Outlook: Declining The electrical utility market is consolidating around incumbents that provide high-frequency updates and verified code compliance. Electrical Formulator is currently exposed: the lack of formula accuracy will drive professional users to more reliable alternatives before the next major update cycle. - 🔴 Calculation inaccuracies lead to professional distrust, which erodes the brand's credibility and limits long-term subscription growth. - 🔴 Technical launch failures following the latest update increase churn pressure, preventing the app from building a sustainable user base. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 5/5 | | Total Reviews | 1 | | Sentiment | Upset (15/100) | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 4 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Electrical Formulator** (this app) | 5/5 | Upset | Historycentral.com | | [Ugly's Electrical References](https://marlvel.ai/apps/com-ascendlearning-uglys) | 4.5/5 | Mixed | Informed Publishing | | [Electrical Calculations](https://marlvel.ai/apps/electrical-calculations) | 4.6/5 | N/A | Egal Net di Ettore Gallina | | [Voltage Drop Calculator.](https://marlvel.ai/apps/voltage-drop-calculator) | 4.6/5 | N/A | V PUGAZHENTHI | | [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 | Frustrated | OpenAI OpCo, LLC | ## Company Profile - **Developer:** Historycentral.com - **Website:** [https://formulatorapp.com/Electrical.html](https://formulatorapp.com/Electrical.html) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/electrical-formulator/id299749412?uo=4) - **Dev Site:** [Official Website](https://formulatorapp.com/Electrical.html) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Ugly's Electrical References*](https://marlvel.ai/apps/com-ascendlearning-uglys) (Informed Publishing) — 4.5/5 Rating | Mixed Sentiment - [*Electrical Calculations*](https://marlvel.ai/apps/electrical-calculations) (Egal Net di Ettore Gallina) — 4.6/5 Rating | N/A Sentiment - [*Voltage Drop Calculator.*](https://marlvel.ai/apps/voltage-drop-calculator) (V PUGAZHENTHI) — 4.6/5 Rating | N/A Sentiment - [*Mitsu: AI Life Coach*](https://marlvel.ai/apps/mitsu-ai-life-coach) (C2 Insights) — N/A Rating | N/A Sentiment - [*ChatGPT*](https://marlvel.ai/apps/chatgpt) (OpenAI OpCo, LLC) — 4.8/5 Rating | Negative Sentiment - [*Pattrn - Discipline Tracker*](https://marlvel.ai/apps/pattrn-discipline-tracker) (Pedro Schott) — 4.8/5 Rating | Positive Sentiment - [*Whats In The Box*](https://marlvel.ai/apps/com-asp-whatsinthebox) (Arron Penfold) — N/A Rating | N/A Sentiment - [*AI Text to Speech - Read Aloud*](https://marlvel.ai/apps/ai-text-to-speech-read-aloud) (Bickster LLC) — 4.6/5 Rating | N/A Sentiment - [*Clockify Time Tracker*](https://marlvel.ai/apps/clockify-time-tracker) (CAKE.com) — 4.6/5 Rating | N/A Sentiment - [*Xmind - Mind Map & Brainstorm*](https://marlvel.ai/apps/xmind-mind-map-brainstorm) (Xmind Ltd.) — 4.8/5 Rating | N/A Sentiment ## 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 and evidence quoting. 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:** 0.5/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 15 - **Data Sources:** user reviews, 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:** 3 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/electrical-formulator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.