I think it's somewhat frequent to have app submissions denied, but I haven't heard of Apple banning future submissions in the same way that I hear of Google permabanning developers.
I agree with Android it's slightly different because side loading is at least possible, but I doubt many people are going to find your widget if it's not on the play store.
I agree with Android it's slightly different because side loading is at least possible, but I doubt many people are going to find your widget if it's not on the play store.