Journeyman Field Pro

Journeyman Field Pro puts electrical and low-voltage calculations, a plain-language code assistant, and field guides in one app — fast, accurate, and offline on the job. ELECTRICAL — 9 CALCULATORS - Voltage Drop (single & 3-phase, copper/aluminum) - Wire Sizing (ampacity check with bundle derating) - Conduit Fill (EMT, IMC, RMC, PVC) - Ohm's Law (solve V, I, R, or P) - Load Calculator (service sizing, 125% rule) - Conduit Bending (offsets, saddles, 3-point, 4-point) - Box Fill (NEC 314.16 volume method) - Motor FLA (conductor & OCPD sizing) - NEC Quick Reference LOW VOLTAGE — 9 CALCULATORS - Fire Alarm Voltage Drop (NFPA 72 NAC) - Camera Power / Voltage Drop - PoE Budget (IEEE 802.3 af/at/bt) - DC Wire Sizing - Battery Backup (standby + derate) - Strobe / Candela Spacing - Cable Pull Tension - Speaker Line Loss (70V + low-impedance) - LV Quick Reference ASK THE CODE — AI ASSISTANT Ask a question in plain English and get an answer with the exact NEC or NFPA 72 article reference. Pick your code edition. No more flipping through a codebook on a ladder. FIELD GUIDES Short, plain-language how-to guides written for working techs — voltage drop, wire sizing, motor circuits, PoE budgeting, grounding vs bonding, strobe placement, and more. Each one ends with the key takeaways. SAVE & ORGANIZE Save any result or code answer and pull it back up later — all stored on your device, available offline. Star your go-to calculators to pin them to the top. BUILT FOR IPHONE AND IPAD A layout that makes real use of the screen, whether you're on a phone in your pouch or an iPad in the truck. No account, no login, no sign-up. The calculators and guides work with no internet connection at all.