Report updated Jul 11, 2026
VFD Cable Sizing Calc
For electrical contractors, field technicians, and engineers involved in VFD and motor installations.
VFD Cable Sizing Calc is an established utilities app that is completely free.
What is VFD Cable Sizing Calc?
VFD Cable Sizing Calc is a specialized utility tool for electrical contractors and engineers to calculate cable sizing for variable-frequency drive installations on iOS.
Users hire this tool to ensure technical compliance in industrial electrical projects, which in turn drives the specification of Southwire's physical cable products.
Current Momentum
v1.0
- Added custom Full Load Amps input.
- Maintains focus on industrial technical utility.
Active Nemesis
Electrical Calculations
By Egal Net di Ettore Gallina
Other Rivals
7-Day Rank Pulse 🇺🇸
UtilitiesNo ranking data
Rating Pulse 🇺🇸
Gathering signals...
What makes this app unique?
Loading...
What Are The Key Features?
Calculates required cable size for VFD to motor installations, driving specification of Southwire cable products.
Allows manual entry of Full Load Amps for non-standard motor configurations.
Provides on-the-go electrical calculations, reinforcing Southwire's brand as a technical resource.
How much does it cost?
- Free to download and use
The app is a free utility provided by Southwire to support the specification and installation of their physical wire and cable products.
Who Built It?
Southwire Company
Providing electrical professionals with specialized field calculators for wire sizing, conduit fill, and circuit design.
Portfolio
13
Apps
What other apps does Southwire Company make?
Southwire® Conduit Fill Calc
Southwire® Voltage Drop Calc
SIMpull 600V Calculator
Southwire® Conversion Calc
Partial Reel Calculator
Southwire Circuit
Explore the full Southwire Company report
Portfolio breakdown, audience, momentum, and every app published by Southwire Company.
What do users think recently?
Analysis in progress, available soon
What is the competitive landscape for VFD Cable Sizing Calc?
Where is it available?
Localized markets (1)
How's The Utilities Market?
Southwire positions this utility as a free, specialized tool to support the specification of their physical cable products. The app targets electrical contractors and engineers who require precise sizing for VFD installations, a niche that demands high technical accuracy over general-purpose utility.
Which niche is VFD Cable Sizing Calc in?
to calculate proper cable size for installations
Explore the full Electrical Engineering Calculators niche
Every app in this space (41 tracked), the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
This app serves the same professional electrical engineering audience with a comprehensive suite of calculation tools.
Differentiators
- Offers a massive library of over 200 electrical calculation tools compared to the target's single-purpose utility.
- Maintains a high release velocity with three updates in the last six months to ensure code compliance.
Contenders(2)
Directly competes in the specialized utility niche of electrical sizing and power loss calculations.
Differentiators
- Focuses specifically on voltage drop metrics, providing a more granular output for that specific calculation.
- Features a simplified, single-screen interface that reduces the input friction found in broader calculation suites.
Leverages a well-known industry brand to provide standardized electrical reference data and calculations.
Differentiators
- Integrates authoritative industry reference tables directly into the calculation workflow for professional verification.
- Provides a trusted, standardized user experience that aligns with established electrical engineering textbooks.
Same space(1)
Occupies the same Utilities category but serves a general-purpose audience rather than a specialized engineering niche.
Differentiators
- Provides a broad-spectrum utility tool that lacks the specialized electrical engineering formulas required by the target audience.
- Relies on massive general-market scale rather than the technical precision required for VFD and cable sizing.
Compare VFD Cable Sizing Calc against every rival
All rivals in one side-by-side table: identity, store metrics, ratings & sentiment, and strategic intel, plus a head-to-head page for each.
The outtake for VFD Cable Sizing Calc
Strengths to defend, gaps to attack
Core Strengths
- Technical resource positioning drives brand preference for physical cable products.
- Custom Full Load Amps input enables support for non-standard industrial motor configurations.
Critical Frictions
- Single-purpose utility lacks the comprehensive calculation suite required for daily professional use.
- Absence of integrated industry reference tables forces users to switch apps for verification.
Growth Levers
- Integration of authoritative reference tables could increase the app's utility for professional verification.
- Expansion into broader electrical calculation categories could capture more of the contractor's daily workflow.
Market Threats
- High-velocity rivals with 200+ calculation tools drain the user's daily attention.
- Standardized reference apps like Ugly's capture the professional verification market segment.
What are the next best moves?
Integrate industry reference tables because it is the top missing feature for professional verification → increase daily app utility.
Competitors like Ugly's use reference tables to capture the professional verification workflow.
Trade-off: Pause the development of secondary utility calculators to prioritize core verification features.
A counter-intuitive read
The app's single-purpose design is a feature, not a bug, because it prevents the feature bloat that makes general-purpose electrical suites difficult to navigate for field-based VFD sizing tasks.
Feature Gaps vs Competitors
- Integrated industry reference tables (available in Ugly's Electrical References but missing here).
- Comprehensive suite of 200+ electrical tools (available in Electrical Calculations but missing here).
Key Takeaways
Southwire successfully uses this utility to drive product specification, but the tool's narrow focus limits its retention against comprehensive calculation suites, so the team should prioritize integrating industry reference tables to capture the professional verification workflow.
Where Is It Heading?
Stable
Users report: the electrical utility market is consolidating around comprehensive, multi-tool suites that serve as a single source of truth for contractors. Southwire's current maintenance-mode posture leaves it exposed to rivals who provide integrated reference data, which will likely erode the app's utility-driven retention over the next two quarters.
The app maintains a steady utility focus, but the lack of feature expansion leaves it vulnerable to high-velocity competitors who update frequently.
Sources
- [1] App Store listing, source