Bring the concept with this design:
-Represent the main idea of the app ( to help professional electricians perform complex calculations quickly and easily) with a stylized electric icon.
-The electric icon
covers the whole concept of the app (professional electricians as the users, resemble the name of the apps "S" for Sparky app, and represent the quick aspect of the application usability.
-Create it in a clean, simple and minimalistic style, with the same colour scheme as the company's to give a branding linkage.