Target Senior IOS Engineer interview questions

Got a call from tech recruiter and he asked about my projects and experience. Then he shared a project and told me to complete it in three or four days. After completed that one more round was scheduled to discuss about the project. There I was asked about why chose to solve the project the way I did and few iOS questions. There were few general problem approaching questions also, like when you are start working on project what are all the things do you consider?