A useful application that allows you to execute:- Voltage divider calculator.- Calculate the equivalent resistor for a number of parallel resistors.- First order rc filter calculator.- Ohms Law with simple calculator.For each calculation you can save the result in pdf in your external storage of your mobile device.=============Important noticeTo view files saved in your Phone file system I suggest you use the Files by Google application. Unfortunately, the native file systems of some smartphones limit the complete display of folders and filesThanks for your patience=============