Your Complete Electrical Field Companion
14 NEC 2023 calculators + standard calc · hands-off voice assistant · photo analysis · full invoicing · 23 wiring diagrams · NEMA configs · transformer wiring · NEC code changes · blueprint symbols · favorites · job reminders — all in one app.
$9.99
One-time purchase · No subscription · No ads · Offline ready*
Hands-Off Voice Mode
Gloved hands, crawl space, panel work — tap once and Coop listens automatically. Ask your question out loud. Get the answer read back to you. It loops back and listens again. No typing. No screen touching. Choose a male or female voice. Requires internet connection.
① Tap once to start
② Ask out loud
③ Hear the answer
④ Auto-repeats
What Sets This App Apart
Tools that go beyond any printed pocket reference
🎙 Hands-Off Voice AssistantFull voice conversation while your hands are busy. Auto-looping — Coop listens, answers aloud, and listens again. Choose male or female voice. Works in crawl spaces, on ladders, at panels. Requires internet.
📸 Photo AnalysisPoint your camera at a motor nameplate, panel schedule, or breaker label. Coop reads it and tells you exactly what you need — wire size, overload rating, OCPD. Requires internet.
🧮 14 NEC Calculators + Standard CalcVoltage drop, wire size, conduit fill, box fill, motor FLA, locked-rotor current, transformer sizing, short circuit, ampacity adjustment, and more — all offline, all NEC 2023. Plus a full arithmetic calculator.
📐 23 Interactive Wiring DiagramsSwitches, GFCI, AFCI, 3-way, 4-way, EV chargers, hot tubs, service entrance, MWBC, ceiling fans, and more. With NEC article references built in. All offline.
📖 Complete NEC Reference LibraryAmpacity tables, NEMA wiring configurations, transformer connection diagrams, blueprint/electrical symbols, NEC 2020→2023 code changes, GFCI/AFCI requirements, burial depths, grounding electrode sizing, and more. All offline.
🧾 Full Invoicing Suite12 trade-specific invoice templates, PDF generation, tax rate lookup by zip code, client database. Create and send professional invoices from the job site.
🔔 Jobs & RemindersTrack jobs with notes, set push notification reminders for inspections, permits, callbacks. Bookmark your most-used calculators and references for quick access.
🌍 9 LanguagesEnglish, Spanish, French, Chinese, Tagalog, Hindi, Russian, Korean, Japanese. The entire app — calculators, references, and interface — works in your language.
🔦 Built for Real Field WorkDark mode for low-light conditions. Large touch targets for gloved hands. Backup and restore your data. Calculators, references, diagrams, and invoicing all work with no signal.
💾 Backup & RestoreExport all your jobs, invoices, notes, favorites, and settings to a single file. Restore on any device. Your data is yours — always.
One app. Everything you need in the field.
Calculators · Voice Assistant · Wiring Diagrams · NEC References · Invoicing · Reminders · 9 Languages · Offline Ready*
$9.99 — buy once, own it forever
No subscription. No ads. No account required.
*Offline ready — all calculators, reference tables, wiring diagrams, invoicing, and job management work without internet. The Coop Assistant (voice mode, photo analysis, and chat) and tax rate lookup require an internet connection.