What this app is. What it isn’t. What you could build.

One-liner

A lightweight, offline electrical calculator app for electricians and DIYers that computes wire size, voltage drop, circuit breaker sizing, and load calculations.

Strengths

Fast, no-frills interface optimized for on-site use with minimal loading time
Offline functionality critical for field work in areas without internet
Highly rated for accuracy in voltage drop and wire gauge calculations (4.8 avg rating)
Simple navigation with clear input fields for common electrical formulas
Top-50 ranking for 'electric'—proves strong keyword relevance and search demand

Weaknesses

Users complain about missing features like NEC code references or real-time unit conversion
No support for multiple circuits or bulk load calculations (review: 'Only one circuit at a time, not practical for big jobs')
Outdated UI design—some users note it looks 'like a 2010 app' despite working well
No export or save history feature (review: 'Can’t save my last calculation, have to re-enter everything')
Limited customization—no ability to add custom formulas or user-defined parameters

Opportunities

Add a modular, multi-circuit calculator with save/load history for recurring projects
Integrate quick access to NEC code snippets (e.g., Table 310.16) via searchable index
Build a dark mode and modern UI overhaul to appeal to younger electricians
Offer a free tier with basic tools and premium tier ($2.99/month) for advanced features
Add shareable PDF reports of calculations for client documentation

Build ideas

Competitors

Electrical Calculator Pro
Electrician Calculator
Voltage Drop Calculator

AI-generated brief · 5/13/2026, 1:56:49 AM

First load takes ~10–30s while we generate the brief. Cached afterward.