1)   Electrist 1.321
The top-rated electronic & electrical engineering tool for Palm OS with the most advanced interface and hundreds of calculations. Only $20 USD - compare features and price with competing software.
ohms, watts, decibel, dB, delta, wye, voltage drop, VSWR, AWG, mm2,

 2)   Electroguide 2.0
Mathematics formulas with ANNEXE / TABLE and CHART,Tension , Resistance, Current, Power, Capacitive and inductive reactance ,Series and Parallel inductance , constants RL, Wavelenght, Period,Converter, Series circuits RL - RC - RLC and more..
resistance, coil, capacitance, reactance, electronic, power, current, voltage, tension,