This app has four major calculators.
1. Trace width calculator computes the values of current, resistance and voltage drop etc for a trace width. It also helps you to get the required trace width for a specific current ratting and temperature.
2. PCB Via calculator makes you to know PCB via ratting like current, resistance, voltage drop and thermal resistance. (Pro Version Only)
3. Spiral Inductor Calculator helps you to design Inductors on PCB. You can design square, hexagonal and octagonal inductors on your board now. (Pro Version Only)
4. Trace Impedance Calculator can get trace impedance for you. We have 4 major (microstrip, embedded, stripline and dual stripline) configurations for you. So impedance calculations are on your palm now......... (Pro Version Only)
There is still lot more to come in next release..........