A simple app for calculating audio and electrical transformer core sizes and numbers of turns of wire etc. The app consists of a "winding" class which is a child class of transformer class for each type. So, the transformer objects can be created and saved locally on the phone. The whole app is available for iOS so I need someone to make it for android phones preferably in Android Studio so that I can publish it from my account once it's ready. You can check how the app is supposed to work in this video and the source code I wrote for iOS is also available.