Combining Flutter frontend with .NET Core backend for Android and iOS

Question

Currently working for a company that use .NET (not Core) but want to switch to .NET Core and thought to do so by creating an app with a Flutter.io frontend and .NET Core backend

Answer 1

.NET/core is for API, flutter is for native apps. They are completely unrelated.

One side will have no impact on the other one. So yes, you can use both.