I had a long technical phone interview that went pretty well. Then they wanted me to do an assignment.

I spent half a day building an app according to the specifications they sent me and waited for some feedback.

They sent me an email stating they had narrowed down their search and would not be moving forward. We had been in contact for a few months before I decided to take the assignment, so they weren't in a rush to hire somebody immediately.

I asked for some feedback on my assignment, just to understand how to improve myself, and never heard back from them. Rude.

I was asked to design a game app for the phone.

It was actually pretty interesting.