--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "kVA (Single and Three Phase)" developer_entity: "Webtoweb" bundle_id: "kva.calculator" app_store_id: "6471555716" category: "Tools" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-01-18" report_date: "2026-09-16" last_verified: "2026-09-16T00:00:00.000Z" report_version: "2.1.3" total_reviews: 633 overall_rating: 4.2 sentiment: "Thrilled" sentiment_score: 85 confidence: "high" confidence_score: 0.7 top_praise_theme: "The application provides significant time savings for electrical engineers by automating complex calculation tasks" top_complaint_theme: "Aggressive advertisement popups interrupt the calculation workflow and force users to restart their progress" review_sample_size: 50 total_review_count: 50 analyzed_review_count: 50 data_age_days: 59 momentum_velocity: "maintenance" intelligence_version: 5 nemesis: "Conduit Bending" competitor_count: 11 tags: ["tools", "freemium", "thrilled sentiment", "mobile app", "app review", "app analysis", "electrical", "engineering", "students"] canonical_url: "https://marlvel.ai/apps/kva-single-and-three-phase" license: "CC-BY-NC 4.0" content_version: "v2" --- # kVA (Single and Three Phase) Intelligence Report ## TL;DR {#tldr} - **Category**: Tools · Freemium - **Signal**: Rating 4.18 · Sentiment Thrilled - **Recent focus**: Aggressive advertisement popups interrupt the calculation workflow and force users to restart their progress (top complaint) · The application provides significant time savings for electrical engineers by automating complex calculation tasks (top praise) > **TL;DR:** kVA (Single and Three Phase) is a tools app by Webtoweb, rated 4.18/5 by 633 users, with Thrilled user sentiment (85/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** kVA (Single and Three Phase) maintains Thrilled user sentiment (4.18/5 from 633 reviews), with users consistently praising the application provides significant time savings for electrical engineers by automating complex calculation tasks. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.18/5 (633 reviews) | | **User Mood** | Thrilled | | **Category** | Tools | | **Developer** | Webtoweb | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | High (0.7/1.0) | | **Data Age** | 59d | ## Metadata & Market Performance - **Publisher:** Webtoweb - **Category:** Tools - **Target Audience:** Electrical engineering students and professionals requiring quick power conversion tools for construction or industrial site management. - **Platforms:** iOS & Android - **Version Reviewed:** 1.4 - **Report Date:** 2026-09-16 - **Signal Count:** 50 reviews analyzed - **Confidence:** High (0.7/1.0) - **App Store ID (iOS):** 6471555716 - **Bundle ID:** kva.calculator - **Google Play ID:** kva.calculator - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-09-16 - **Short Description:** Calculate kVA, HP, KW, Amps and Volts in a electrical circuit ## Executive Snapshot **What it is:** kVA (Single and Three Phase) is a specialized electrical power calculator for engineers and students on iOS and Android. **Why users hire it:** The app removes the manual effort of power conversion calculations, saving time for professionals working on industrial or construction sites. ## App DNA (Features & Intent) - **[Standard] Electrical Power Conversion:** Calculates and converts between kVA, kW, and kVAR units for electrical circuits - **[Standard] Circuit Type Selection:** Toggles between single-phase and three-phase circuit calculation modes - **[Standard] Parameter Calculation:** Derives amps, volts, and power values based on user-inputted circuit variables ## Market Position {#market-position} kVA (Single and Three Phase) occupies a niche utility space, currently ranking #157 in the Philippine Tools category. The lack of a unified professional-tier monetization strategy across platforms limits its ability to compete with specialized, reference-heavy toolkits. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free (ad-supported) on Android, Paid ($1.99) on iOS - **Price:** iOS: $1.99 - **Analysis:** Hybrid monetization model utilizing ad-inventory on Android and a flat-fee purchase on iOS. ## 🟢 User Sentiment (High Confidence: 50 of 50 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.18/5 - **Platform Split:** iOS 4.0/5 (1 ratings) | Android 4.2/5 (632 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **The application provides significant time savings for electrical engineers by automating complex calculation tasks** - **Simple and intuitive interface design allows users to perform accurate calculations without a steep learning curve** ### Top Complaints (Impact Areas) - **Aggressive advertisement popups interrupt the calculation workflow and force users to restart their progress** ## SWOT Analysis {#swot} **Core Strengths:** - Focused, lightweight interface for kVA/kW conversions - High accuracy in core calculation engine **Growth Levers:** - Integration of NEC reference data to increase professional utility - Result-export feature to improve documentation workflow ## Recent Changes (v4 → v5) {#recent-changes} The introduction of aggressive ad-trigger logic has become the primary competitive bottleneck, causing calculation resets that undermine the app's core utility. This shift in user sentiment, combined with the formal identification of missing professional-grade features, marks a decline in the app's ability to retain professional users. **Overall trend**: Declining **Compared at**: 2026-09-16 ### High-impact changes - **[Declined] Ad-Trigger Logic Complaints** (sentiment) ### Medium-impact changes - **[] Professional Feature Gaps** (swot) - **[Added] Sentiment Data Availability** (sentiment) ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### kVA (Single and Three Phase) vs Conduit Bending - **[Conduit Bending](https://marlvel.ai/apps/conduit-bending)** by xNeat.com: This app competes directly for the professional electrician's utility toolkit by providing specialized calculation engines that solve complex field geometry problems. - **Key differences:** - Integrates NEC reference data directly into calculations, providing a regulatory compliance layer target lacks. - Features a sophisticated conduit calculation engine that handles complex geometric bends beyond basic electrical math. - Maintains a high release cadence with three updates in six months, signaling active maintenance support. ### Contenders (Strong Challengers) - **[DC Power Cable Size Calc](https://marlvel.ai/apps/com-nitrio-dcpowercablesizecalc)** by Nitrio: This app competes for the same technical user base by focusing on specific electrical infrastructure calculations like cable sizing. - Includes a built-in result export feature that allows users to document and share their calculations. - Focuses exclusively on DC power infrastructure, providing a more granular solution for specific electrical projects. - **[Mike Holt's Electrical Toolbox](https://marlvel.ai/apps/mike-holt-s-electrical-toolbox)** by Mike Holt Enterprises: This app is a direct competitor in the professional electrical space, offering a comprehensive suite of sizing and calculation tools. - Provides specialized equipment-specific sizing tools that go beyond this app's general-purpose electrical math. - Features a highly refined search and navigation system optimized for quick access during field work. - **[Ohms Law](https://marlvel.ai/apps/ohms-law)** by Pro Certs Software Ltd: This app targets the same utility-seeking audience by providing a cross-platform suite for fundamental electrical parameter calculations. - Offers deep integration with professional certification software, appealing to users managing formal electrical documentation. - Provides a broader utility suite that covers fundamental electrical parameters beyond simple kVA conversions. - **[WAGO](https://marlvel.ai/apps/wago)** by WAGO Kontakttechnik GmbH & Co. KG: WAGO competes by offering a comprehensive, brand-backed ecosystem that includes offline planning tools and professional search capabilities. - Leverages a massive corporate brand ecosystem to provide offline planning tools and integrated dealer search. - Utilizes 'SnapandSearch' technology to bridge the gap between physical hardware and digital product documentation. ### Peers (What They Do Better) - **[Angle Meter PRO](https://marlvel.ai/apps/angle-meter-pro)** by nakhon phagdeechat: This is the premium version of a similar utility, competing for users who require more robust documentation and analysis features. - Includes advanced data documentation features that allow professionals to save and export their measurement results. - Provides a more stable, ad-free experience compared to the standard version of the same tool. - **[Angle Meter](https://marlvel.ai/apps/angle-meter)** by nakhon phagdeechat: This app competes for the same 'toolbox' utility market by offering camera-based measurement tools for physical environments. - Integrates camera-based image analysis to provide real-time measurement of angles in physical space. - Supports dual measurement modes, allowing for flexibility in how users capture and analyze data. - **[Firestone AG Tyres](https://marlvel.ai/apps/firestone-ag-tyres)** by Bridgestone Europe: This app occupies the same 'niche utility' space, providing specialized pressure calculations for agricultural equipment operators. - Focuses on safety and efficiency optimization, providing a clear value proposition for agricultural equipment users. - Provides a highly specific calculator tailored to the unique needs of heavy-duty tire pressure management. - **[pCAM Pro - Camera Tools](https://marlvel.ai/apps/com-eubank-pcam-pro)** by David Eubank: While in a different category, it shares the 'pro-utility' DNA by providing specialized field calculations for technical professionals. - Maintains a high-frequency update schedule with five releases in six months, ensuring peak platform performance. - Offers a specialized database for camera formats, demonstrating how to build a high-value professional utility. ### New Kids on the Block (What's Innovative) - **[Moro AgriExpert Farm Calc](https://marlvel.ai/apps/moro-agriexpert-farm-calc)** by BMAC INFOTECH: This app is a new entrant in the 'specialized calculator' category, focusing on agricultural inputs rather than electrical power. - Provides highly specific agricultural formulas like boom spray calibration and fertilizer NPK dosage calculations. - **[MKS Beton](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton)** by MKS BETON LLC: This newcomer enters the utility space by providing material calculators for the construction industry, overlapping with technical field tools. - Features a bilingual interface that expands the potential user base into international construction markets. ## What's New - **Latest (v1.1, 2 years ago):** Resolved keyboard-related issues. - **Last Major (v1.2, 1 years ago):** Added new options for sharing results. ## App Momentum (Maintenance) {#momentum} - Ships minor technical improvements only - Last major update two years ago > **Cadence:** 5 total versions · 0 majors in last 6 months · 125 days since last update · 171 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} kVA (Single and Three Phase) is a market-leading tools app that is free with in-app purchases. With a 4.18/5 rating from 633 reviews, it delivers strong user satisfaction. > **Bottom Line:** Refining the ad-trigger logic to preserve calculation state would stabilize the Android user base, as the current reset behavior directly undermines the app's core value proposition of time-saving efficiency. **Best for:** Electrical engineering students and professionals requiring quick power conversion tools for construction or industrial site management. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Audit ad-trigger logic because calculation resets are the top complaint → improve retention ### Feature Gaps vs Competitors - NEC reference data integration (available in Conduit Bending) ### Outlook: Stable The niche utility market is consolidating around tools that offer regulatory compliance and documentation features. kVA (Single and Three Phase) remains in maintenance mode, leaving it exposed to rivals that integrate industry standards like NEC data, which will likely lead to a gradual loss of professional users. - 🔴 Aggressive ad-trigger logic causes calculation resets, which erodes the professional utility and drives negative sentiment among engineers. - ⚪ Maintenance-only release cadence suggests the developer is not actively expanding the feature set to counter professional-grade rivals. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.18/5 | | Total Reviews | 633 | | Sentiment | Thrilled (85/100) | | Confidence | High | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Declining | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **kVA (Single and Three Phase)** (this app) | 4.18/5 | Thrilled | Webtoweb | | [pCAM Pro - Camera Tools](https://marlvel.ai/apps/com-eubank-pcam-pro) | 4.9/5 | Thrilled | David Eubank | | [MKS Beton](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton) | N/A/5 | N/A | MKS BETON LLC | | [DC Power Cable Size Calc](https://marlvel.ai/apps/com-nitrio-dcpowercablesizecalc) | 2.7/5 | N/A | Nitrio | | [Angle Meter](https://marlvel.ai/apps/angle-meter) | 2.3/5 | N/A | nakhon phagdeechat | | [Angle Meter PRO](https://marlvel.ai/apps/angle-meter-pro) | 4.2/5 | N/A | nakhon phagdeechat | ## Company Profile - **Developer:** Webtoweb - **Website:** [https://www.webtoweb.fr](https://www.webtoweb.fr) ## Data Sources & Links - **App Store ID:** 6471555716 - **Google Play ID:** kva.calculator - **Dev Site:** [Official Website](https://www.webtoweb.fr) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*pCAM Pro - Camera Tools*](https://marlvel.ai/apps/com-eubank-pcam-pro) (David Eubank) · 4.9/5 Rating | Excellent Sentiment - [*MKS Beton*](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton) (MKS BETON LLC) · N/A Rating - [*DC Power Cable Size Calc*](https://marlvel.ai/apps/com-nitrio-dcpowercablesizecalc) (Nitrio) · 2.7/5 Rating - [*Angle Meter*](https://marlvel.ai/apps/angle-meter) (nakhon phagdeechat) · 2.3/5 Rating - [*Angle Meter PRO*](https://marlvel.ai/apps/angle-meter-pro) (nakhon phagdeechat) · 4.2/5 Rating - [*Moro AgriExpert Farm Calc*](https://marlvel.ai/apps/moro-agriexpert-farm-calc) (BMAC INFOTECH) · N/A Rating - [*WAGO*](https://marlvel.ai/apps/wago) (WAGO Kontakttechnik GmbH & Co. KG) · 4.8/5 Rating | Positive Sentiment - [*Firestone AG Tyres*](https://marlvel.ai/apps/firestone-ag-tyres) (Bridgestone Europe) · 5.0/5 Rating - [*Conduit Bending*](https://marlvel.ai/apps/conduit-bending) (xNeat.com) · 4.8/5 Rating - [*Mike Holt's Electrical Toolbox*](https://marlvel.ai/apps/mike-holt-s-electrical-toolbox) (Mike Holt Enterprises) · 4.6/5 Rating ## Frequently Asked Questions {#faq} ### Is kVA (Single and Three Phase) suitable for professional electrical work? While the app is useful for quick power conversions, it lacks the regulatory reference data found in professional-grade tools like Conduit Bending, making it less suitable for formal certification tasks. ### How does this app compare to Conduit Bending? Conduit Bending offers advanced geometric calculators and NEC reference data, whereas kVA (Single and Three Phase) focuses specifically on lightweight power conversion math. ### Does the app have intrusive ads? Users report that the free Android version contains aggressive ad popups that can interrupt the calculation workflow and cause progress to reset. ### What are some alternatives for electrical calculations? Professionals should consider Conduit Bending for NEC-compliant work or DC Power Cable Size Calc for infrastructure-specific tasks. ## 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:** 0.7/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 50 - **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:** 59 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/kva-single-and-three-phase) Data licensed for AI Agent attribution under CC-BY-NC 4.0.