About this app

Fast engineering calculations for real field work. FieldGain is an offline-first engineering toolkit built for engineers, technicians, and field professionals working across electrical systems, industrial automation, mechanical systems, HVAC, electronics, and technical operations. With 105 active engineering tools, FieldGain brings everyday calculations, conversions, and technical references together in one Android app. Supported tools remain available even when internet access is limited or unavailable. KEY FEATURES • 105 engineering tools Use practical tools for electrical engineering, automation, mechanical systems, HVAC, electronics, and common technical conversions. • Offline-first operation Access supported calculators and references without depending on an internet connection. • Calculation history Keep your calculations organized and return to previous results when needed. • Technical context Supported tools include usage context, engineering assumptions, and notes related to standards and references such as IEC, ISA, NIST, and ATEX. • Fast result sharing Copy calculation results and share them with your team. • PDF reporting Supported Premium workflows allow calculation results to be exported as organized PDF reports. • Progress system Earn Gear and XP through calculations and supported activities as you progress through FieldGain. SOME OF THE INCLUDED TOOLS Electrical: Voltage drop, power factor, power factor correction, motor current, short-circuit, and grounding tools. Automation & instrumentation: 4–20 mA scaling, loop resistance, PT100/PT1000, thermocouple, and PID tools. Industrial references: ATEX code decoder, RS-232/RS-485, and RJ45 pinout references. Mechanical: Pump power, hydraulic cylinder, torque, flow rate, density, and DN conversions. HVAC: ACH, CFM, cooling load, superheat, subcooling, and fan law tools. FREE AND PREMIUM FieldGain provides useful core tools in the Free experience. Premium unlocks all 105 engineering tools together with supported cloud history and synchronization, PDF reporting, additional shortcuts, and an ad-free experience. BUILT FOR THE FIELD FieldGain is designed to reduce the distance between a technical problem and the calculation, context, or record needed to solve it. Calculate. Check. Record. Keep working. FieldGain — built from the field, and still growing with it.