Why limit yourself to your small screen on the phone? Run Droid Circuit Calc Pro, an app by Piddo apps, best experienced on your PC or Mac with BlueStacks, the world’s #1 Android emulator.
Droid Circuit Calc Pro feels like a compact electronics bench stuffed into one app, the kind of tool a tinkerer keeps open while wiring or planning a quick build. The focus is on getting numbers and reference info fast, not on flashy looks. There are calculators for the usual basics like Ohm’s law, voltage dividers, parallel resistors and LED resistors, then it goes deeper with RC and LC filters, op amp filter helpers, inverting and non inverting gain, resonance, frequency and wavelength. RF folks will notice microstrip and coax bits, plus pi and T attenuator calculators. It even covers single layer air core inductance, PCB trace width, battery charge time, and common regulator setups like LM317 constant current or voltage, with a simple zener series resistor tool as well.
Beyond math, the app doubles as a pocket reference. There are SMD resistor code and color band decoders, capacitor code lookups, common E series value tables, and quick guides for IC packages, LM78xx or LM79xx, LM317 or LM337. The resources section reads like a handy cheat sheet, from ASCII codes and radio frequency lists to AWG wire tables. Pinouts are everywhere, which saves endless searching: micro SD, PC ports like USB or VGA or HDMI, ATX power headers, SIM modules, PIC and AVR programming connectors, even those small character LCDs and a few Garmin connectors. There is also a circuits gallery with simple audio amps, alarms, 555 timers, LED toys, power supplies, RC plane bits, RF and solar. The schematics are straightforward and good for hobby use, not a textbook, so a person will get more from it if they already know the basics.
On a PC with BlueStacks the whole thing breathes a bit. Tables and pinout diagrams are easier to read on a bigger display, and typing values with a keyboard feels quicker when jumping between calculators. It is not fancy, but it is practical, and it gets out of the way so the actual work can move along.
Big screen. Bigger performance. Use BlueStacks on your PC or Mac to run your favorite apps.
