Droid Circuit Calc Free is a free Android application developed by Piddo apps that offers a wide range of electronic circuits and calculators, electronic components guide, and other useful resources. This app is a must-have for hobbyists and designers as it makes it easier to do calculations for circuit designs. The app features a vast collection of electronic circuit calculators such as Ohm Law Calculator, Resistor Voltage Divider Calculator, Parallel Resistors Calculator, LED Resistor Calculator, RC Filter calculator, LC Filter Calculator, and much more.

In the electronic components section, you can find SMD resistor value codes calculator, Resistor color codes calculator, Capacitor values code calculator, IC packages guide, LM78xx and LM79xx voltage regulators guide, LM317 and LM337 voltage regulators guide, and much more. Additionally, the app offers a resources section that includes a list of ASCII codes, radio frequencies list, AWG wire gauge table, and different PC ports pinouts, among others. The app also features a huge collection of electronic circuits for hobbyists, including audio amplifiers, alarms and bells, LED circuits, power supply circuits, and home security circuits. All of these features are free and accessible to anyone with an Android device.