Launching today
Electro Master
Electro Master — pro electrical calculators in your pocket
2 followers
Electro Master — pro electrical calculators in your pocket
2 followers
Electro Master puts 11 electrical calculators, an offline reference library, and PDF project reports in one app — no more juggling a calculator, notebook, and printed tables on site. Everything works fully offline, and every calculator shows the formula behind the result so you can trust the numbers. Free core tools; Pro unlocks short-circuit, motor starters, grounding & more. Available in 5 languages (EN, ES, BG, RO, SR). Built with electricians, for electricians.
👋 Hey Product Hunt!
I built ElectroMaster because every electrician I know still juggles a calculator, a notebook, and a stack of reference tables on the job site. I wanted all of it in one fast, reliable app that works fully offline — because basements and substations don't have signal.
What's inside:
⚡ 11 electrical calculators
Free: Ohm's Law, Voltage Drop, Cable Sizing, Fuse/Breaker, Power
Pro: Power Factor Correction, Short-Circuit, Grounding, Lighting, Motor Starters (DOL & Star-Delta)
📚 Offline reference library — cable ampacities, standard ratings and tables, always in your pocket, no internet needed.
📁 Projects & documents — organize jobs, attach photos, and export clean PDF reports to share with clients or your team.
🌍 5 languages — English, Spanish, Bulgarian, Romanian, Serbian.
🎯 Built with electricians in mind: every calculator shows the formula behind the result, validates your inputs, and gives you numbers you can trust in the field.
Free to use with core calculators, or unlock everything (all Pro calculators + no ads) for €2.99/month.
I'd love your feedback — what calculator should I add next? 🔌