The professional-grade electrical reference app trusted by electricians worldwide. Works 100% offline.
Free download with optional Pro upgrade
Professional tools for electricians, engineers, and DIY enthusiasts
International standards including IEC, NEC, and 12+ country-specific codes. Old vs new comparison included.
UK, Germany, France, Italy, Spain, Netherlands, Poland, Belgium, Austria, Portugal, USA, and more.
Ohm's Law, Power Calculator, Voltage Drop, and Wire Size calculators with instant results.
Single-phase, three-phase, switches, sockets, and lighting circuit diagrams. Zoomable and clear.
50+ IEC 60617 standard symbols with descriptions. Perfect for reading electrical drawings.
Works without internet. Perfect for job sites, basements, or anywhere with poor connectivity.
Select your country standard to see official wire colors instantly
Fill in any two values β the third calculates automatically
Power, Voltage Drop & Wire Size calculators available in the app
Get All Calculators βGet access to professional-grade calculators and complete diagram library
Free on the App Store. Start identifying wire colors instantly.
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