The Resistance Connection Calculator, developed by Alex1001000R, is a free Android application in the Education & Reference category. The app performs calculations for the connection resistance both sequentially and in parallel. It also provides an equivalent transformation of a triangle and a resistance star, as well as the calculation of the voltage divider and resistance for LED.

The interface is simple and user-friendly, with a clear layout and easy-to-use features. The app's calculations are accurate and reliable, making it an excellent tool for students, educators, and professionals in the field of electrical engineering. Overall, the Resistance Connection Calculator is a useful application that provides a quick and easy way to perform complex electrical calculations.