Ohm's Law Calculator, developed by Peter Ho, is a free Android utility app that helps users to calculate voltage, current, resistance, and power in a DC circuit. With its user-friendly interface, the app makes it easy for users to input values and get accurate results.

In addition to DC circuits, the app also allows users to calculate voltage, current, impedance, and power in an AC circuit. This feature makes it a versatile tool for electrical calculations, especially for those in the field of electronics or engineering. Overall, Ohm's Law Calculator is a useful app for anyone who needs to perform electrical calculations on the go.