A free program for Android, by Peter Ho.

This app is designed for people who need to calculate the resistance of a circuit. You can find the value of the resistance of two or more resistors in series or parallel. It can also be used to calculate the equivalent resistance of a combination of two or more resistors.

The app allows you to save the results of the calculations in a CSV (Excel) file. This means that you can open the file and view the results in a more convenient way. You can also export the results to an HTML table.

It is very easy to use. All you have to do is enter the value of the resistors you want to use, and the app will calculate the equivalent resistance for you. It is very easy to use and does not require any special knowledge.

This app is suitable for electronic engineers and hobbyists.