DendroLabs
Workshop & Code Bench
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Ohmmio

Professional electrician calculator and NEC reference

○ In Development iOS · Android $19.99one-time purchase — NEC code updates available for $7.99 per cycle

Your Electrical Code Companion

Ohmmio is a professional-grade electrician calculator paired with an intuitive NEC (National Electrical Code) reference. Get the calculations you need and understand the code behind them — without flipping through a physical codebook.

Key Features

  • Electrical calculations: wire sizing, voltage drop, conduit fill, box fill
  • NEC code reference with plain-language explanations
  • Audit-compliant guidance for inspections
  • Works offline — no internet required on the job site
  • Cross-platform: iOS and Android

Honest Pricing

You buy Ohmmio once and it works — period. When a new NEC edition drops (every three years), you can grab the update for $7.99 if you want it. If you don’t, the app keeps working with the code edition you already have.