--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Ohms Law" developer_entity: "Pro Certs Software Ltd" bundle_id: "com.procerts.ohmslaw" app_store_id: "590727537" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2025-07-28" report_date: "2026-05-26" last_verified: "2026-05-26T00:10:00.173Z" report_version: "1.3.9" total_reviews: 120 overall_rating: 4.2 confidence: "low" confidence_score: 0.6 data_age_days: 37 momentum_velocity: "maintenance" intelligence_version: 3 nemesis: "Conduit Bending" competitor_count: 11 tags: ["utilities", "free", "mobile app", "app review", "app analysis", "professional", "electricians", "electrical"] canonical_url: "https://marlvel.ai/intel-report/utilities/ohms-law" license: "CC-BY-NC 4.0" content_version: "v2" --- # Ohms Law App Audit ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 4.2 > **TL;DR:** Ohms Law is a utilities app by Pro Certs Software Ltd, rated 4.2/5 by 120 users, available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Ohms Law is a utilities app by Pro Certs Software Ltd. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.2/5 (120 reviews) | | **Category** | Utilities | | **Developer** | Pro Certs Software Ltd | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | Low (0.6/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Pro Certs Software Ltd - **Category:** Utilities - **Target Audience:** Professional electricians and electrical contractors requiring on-site calculation and regulatory reference tools. - **Platforms:** iOS & Android - **Version Audited:** 1.3.9 - **Audit Date:** 2026-05-26 - **Signal Count:** 34 reviews analyzed - **Confidence:** Low (0.6/1.0) - **App Store ID (iOS):** 590727537 - **Bundle ID:** com.procerts.ohmslaw - **Google Play ID:** com.procerts.ohmslaw - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-05-26 ## Executive Snapshot **What it is:** Ohms Law is a utility calculator for power, current, resistance, and voltage on iOS and Android. **Why users hire it:** Users hire this app for quick, on-site electrical calculations, but the lack of regulatory data forces professionals to switch to more comprehensive toolkits for final project verification. ## App DNA (Features & Intent) - **[Standard] Electrical Parameter Calculator:** Calculates Voltage, Current, Resistance, and Power by requiring input of any two variables - **[Differentiator] Cross-Platform Utility Suite:** Collection of electrical tools and reference apps available on iOS, Android, Windows, and Mac * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Differentiator] Certification Software Integration:** Links to professional certification software based on BS 7671, BS 7909, BS 5839, and BS 5266 * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Ohms Law maintains a 4.2-star rating across 120 total ratings, serving as a lightweight utility in a category dominated by code-compliant toolkits. The lack of recent feature updates relative to competitors suggests a stagnant market position. ## Monetization Strategy - **Model:** Free - **Tiers:** Free app with ad support - **Analysis:** Ad-supported model monetizes high-frequency utility usage among free-tier electricians. ## SWOT Analysis {#swot} **Core Strengths:** - Cross-platform availability ensures utility across diverse hardware environments - Integration with professional certification software drives B2B lead generation **Critical Frictions:** - Absence of NEC or BS-standard reference data limits professional adoption - Ad-supported model creates friction for high-frequency users **Growth Levers:** - Integration of offline regulatory reference tables would capture professional-grade market share - Wearable companion apps could provide quick-calc utility on-site **Market Threats:** - Competitors with bundled code-compliance tools drain the professional user segment - High-cadence rivals like Conduit Bending erode the utility-app market share ## Recent Changes (v2 → v3) {#recent-changes} The analysis shifted focus from internal ad-monetization friction to the external threat of code-compliant professional toolkits. **Overall trend**: Stable **Compared at**: 2026-05-26 ### High-impact changes - **[Shifted] Competitive Focus** (positioning) — The primary nemesis changed from Electrical Calculations to Conduit Bending, shifting the competitive benchmark from general utility suites to specialized field-math tools. - **[Shifted] Primary Weakness** (swot) — Weakness shifted from 'Aggressive ad placement' to 'Absence of NEC or BS-standard reference data' as the core barrier to professional adoption. ### Medium-impact changes - **[Shifted] Strategic Priority** (positioning) — PM action items shifted from prioritizing an ad-free tier to integrating offline regulatory reference tables to capture professional market share. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Ohms Law vs Conduit Bending — Head to Head - **[Conduit Bending](https://marlvel.ai/intel-report/productivity/conduit-bending)** by xNeat.com: This app captures the same professional electrician demographic by solving complex field math problems that often accompany basic Ohm's Law calculations. - **Key differences:** - Integrates NEC reference data, providing regulatory compliance that simple calculators cannot offer to professional contractors. - Features a specialized conduit calculation engine that addresses specific physical installation challenges beyond basic electrical theory. - Maintains a high release cadence, signaling a robust development cycle that keeps the tool relevant for professionals. - **Where Ohms Law wins:** - ✅ Offers a more focused, lightweight interface for users who only need quick Ohm's Law results. - ✅ Lower barrier to entry for students or hobbyists who do not require complex NEC code references. - **Where Conduit Bending wins:** - ❌ Provides a comprehensive suite of tools that keeps users within the app for entire project workflows. - ❌ Stronger brand authority in the professional electrical space due to deep integration with industry standards. - **Verdict:** The target app should pivot toward a 'quick-calc' utility niche or integrate broader electrical reference data to prevent user churn to more feature-rich toolkits. ### Contenders (Strong Challengers) - **[Electrical Engineering Toolkit](https://marlvel.ai/intel-report/utilities/electrical-engineering-toolkit)** by Vladislav Zhirnov: It targets the broader electronics engineering market, offering a massive suite of tools that dwarfs the target app's single-function focus. - Includes advanced PCB and signal integrity tools, catering to hardware engineers rather than just field electricians. - Provides a comprehensive RF and analog essentials suite, making it a one-stop shop for electronics hobbyists. - **[Mike Holt's Electrical Toolbox](https://marlvel.ai/intel-report/utilities/mike-holt-s-electrical-toolbox)** by Mike Holt Enterprises: This app is a direct competitor for the professional electrician's attention, bundling Ohm's Law with broader electrical sizing and code-based tools. - Includes equipment-specific sizing features that provide higher value to licensed contractors than generic calculators. - Backed by a well-known industry educator, providing a level of trust and authority that independent apps lack. - **[WAGO](https://marlvel.ai/intel-report/reference/wago)** by WAGO Kontakttechnik GmbH & Co. KG: WAGO leverages its industry-standard hardware reputation to provide a utility app that bridges the gap between calculation and component selection. - Connects users directly to a dealer search and product catalog, creating a tangible path to monetization. - Offers offline planning tools that ensure utility for electricians working in remote or signal-deprived job sites. - **[kVA (Single and Three Phase)](https://marlvel.ai/intel-report/tools/kva-single-and-three-phase)** by Webtoweb: It competes directly by offering specialized electrical power conversions that extend the utility of basic Ohm's Law calculations. - Provides specific support for three-phase power calculations, a critical gap in basic Ohm's Law calculators. - Boasts a significantly larger user base and review volume, establishing higher social proof within the category. ### Peers (What They Do Better) - **[pCAM Pro - Camera Tools](https://marlvel.ai/intel-report/photo-video/com-eubank-pcam-pro)** by David Eubank: It serves as a benchmark for high-end professional utility apps that successfully monetize complex field calculations. - Offers a sophisticated field-of-view preview, demonstrating how to visualize abstract calculations for better user experience. - Maintains a very high update frequency, ensuring compatibility with the latest hardware and professional industry standards. - **[Orenda](https://marlvel.ai/intel-report/productivity/orenda)** by Hasa Inc.: It is a specialized calculator for water chemistry, competing for the same 'professional field tool' user base as the target app. - Integrates an educational academy platform, turning a simple calculator into a recurring engagement and learning hub. - Includes a rewards program that incentivizes long-term app retention and brand loyalty among pool service professionals. - **[Firestone AG Tyres](https://marlvel.ai/intel-report/utilities/firestone-ag-tyres)** by Bridgestone Europe: It occupies the same 'niche utility' space, serving professionals who need specific calculations to ensure safety and operational efficiency. - Focuses heavily on safety and efficiency optimization, aligning the tool with corporate liability and maintenance standards. - Maintains a long-standing presence in the market, providing a stable, albeit dated, utility for agricultural professionals. - **[Tire Pressure Calculator](https://marlvel.ai/intel-report/utilities/tire-pressure-calculator)** by Titan International, Inc.: While in a different technical domain, it shares the 'single-purpose utility' category and competes for the same limited mobile screen real estate. - Features terrain-specific optimization logic that provides specialized value for heavy machinery and agricultural equipment operators. - Utilizes a dual-mode interface to accommodate both quick-check users and those requiring advanced technical adjustments. ### New Kids on the Block (What's Innovative) - **[Moro AgriExpert Farm Calc](https://marlvel.ai/intel-report/tools/moro-agriexpert-farm-calc)** by BMAC INFOTECH: It represents the trend of hyper-specialized calculators entering the market, competing for the same 'field utility' user segment. - Provides highly specific agricultural inputs like seed rates and spray calibration, targeting a distinct professional niche. - **[Build Specs](https://marlvel.ai/intel-report/utilities/build-specs)** by Luke Kazmierowicz: This newcomer threatens the target app by bundling Ohm's Law with other essential construction calculations, increasing its utility for general contractors. - Bundles voltage drop calculations with structural tools like stair and joist sizers, capturing a broader construction workflow. ## What's New - **Latest (v1.3.9, 10 months ago):** Updated for Android 35 and minor UI refinements. ## App Momentum (Maintenance) {#momentum} - Ships cross-platform utility suite updates. - Maintains stable rating across 120 reviews. > **Cadence:** 2 total versions · 0 majors in last 6 months · 301 days since last update · 2 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Ohms Law is an established utilities app that is completely free. With a 4.2/5 rating from 120 reviews, it shows polarized user reception. > **Bottom Line:** Ohms Law holds its ground through a simple, focused interface, but the lack of regulatory data forces professional users to switch to more robust toolkits, so revenue growth hinges on integrating code-compliance references to lock in the contractor segment. **Best for:** Professional electricians and electrical contractors requiring on-site calculation and regulatory reference tools. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] [HIGH IMPACT] Integrate offline regulatory reference tables because professional users churn to code-compliant toolkits → increase professional retention — *Competitor analysis shows rivals like Conduit Bending capture users through NEC/BS-standard data.* _(trade-off: deprioritize Pause the cross-platform UI refresh — regulatory data has higher impact on professional retention.)_ - [ ] [MAINTAIN] [MEDIUM IMPACT] Audit ad-frequency because user feedback flags ad-supported models as friction points → improve session length — *Ad-supported model is the primary monetization lever but risks churn in a utility category.* _(trade-off: deprioritize Same-quarter capacity available — no major lever displaced.)_ ### Feature Gaps vs Competitors - NEC/BS-standard reference data (available in Conduit Bending but absent here) - Three-phase power calculations (available in kVA but absent here) ### Outlook: Stable The utility-app market is consolidating around professional-grade toolkits that provide regulatory compliance, leaving single-function calculators like Ohms Law exposed. Without a pivot to include code-based reference data, the app will likely see continued churn among professional users who require more than basic Ohm's Law math. - 🔴 Competitors bundling code-compliance tools drain the professional user segment, which forces the subject app into a lower-value hobbyist niche. - ⚪ Recent updates focused on maintenance rather than feature expansion, signaling a lack of active investment in the core utility. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.2/5 | | Total Reviews | 120 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Ohms Law** (this app) | 4.2/5 | N/A | Pro Certs Software Ltd | | [pCAM Pro - Camera Tools](https://marlvel.ai/intel-report/photo-video/com-eubank-pcam-pro) | 4.9/5 | Thrilled | David Eubank | | [Build Specs](https://marlvel.ai/intel-report/utilities/build-specs) | N/A/5 | N/A | Luke Kazmierowicz | | [Moro AgriExpert Farm Calc](https://marlvel.ai/intel-report/tools/moro-agriexpert-farm-calc) | N/A/5 | N/A | BMAC INFOTECH | | [Orenda](https://marlvel.ai/intel-report/productivity/orenda) | 4.7/5 | Excited | Hasa Inc. | | [WAGO](https://marlvel.ai/intel-report/reference/wago) | 4.8/5 | Excited | WAGO Kontakttechnik GmbH & Co. KG | ## Company Profile - **Developer:** Pro Certs Software Ltd - **Website:** [https://www.procertssoftware.com/](https://www.procertssoftware.com/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/ohms-law/id590727537?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.procerts.ohmslaw&hl=en&gl=us) - **Dev Site:** [Official Website](https://www.procertssoftware.com/) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*pCAM Pro - Camera Tools*](https://marlvel.ai/intel-report/photo-video/com-eubank-pcam-pro) (David Eubank) — 4.9/5 Rating | Excellent Sentiment - [*Build Specs*](https://marlvel.ai/intel-report/utilities/build-specs) (Luke Kazmierowicz) — N/A Rating | N/A Sentiment - [*Moro AgriExpert Farm Calc*](https://marlvel.ai/intel-report/tools/moro-agriexpert-farm-calc) (BMAC INFOTECH) — N/A Rating | N/A Sentiment - [*Orenda*](https://marlvel.ai/intel-report/productivity/orenda) (Hasa Inc.) — 4.7/5 Rating | Positive Sentiment - [*WAGO*](https://marlvel.ai/intel-report/reference/wago) (WAGO Kontakttechnik GmbH & Co. KG) — 4.8/5 Rating | Positive Sentiment - [*Tire Pressure Calculator*](https://marlvel.ai/intel-report/utilities/tire-pressure-calculator) (Titan International, Inc.) — 4.7/5 Rating | Positive Sentiment - [*Firestone AG Tyres*](https://marlvel.ai/intel-report/utilities/firestone-ag-tyres) (Bridgestone Europe) — 5.0/5 Rating | Mixed Sentiment - [*kVA (Single and Three Phase)*](https://marlvel.ai/intel-report/tools/kva-single-and-three-phase) (Webtoweb) — 4.2/5 Rating | N/A Sentiment - [*Conduit Bending*](https://marlvel.ai/intel-report/productivity/conduit-bending) (xNeat.com) — 4.8/5 Rating | N/A Sentiment - [*Mike Holt's Electrical Toolbox*](https://marlvel.ai/intel-report/utilities/mike-holt-s-electrical-toolbox) (Mike Holt Enterprises) — 4.6/5 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:** 0.6/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 34 - **Data Sources:** user reviews, developer website, company about page, 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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/utilities/ohms-law) Data licensed for AI Agent attribution under CC-BY-NC 4.0.