There were 4 rounds of interview first being data structure round in Swift where the interviewer was from CometChat only then the next round was an iOS specific round with questions related to basics iOS topics like ARC, optionals, data types, and very important topic multithreading and api calls this round was managed by some third party. Then there was one more iOS and dsa specific round with team lead of iOS where he asked me from my resume and some iOS and one dsa problem. Finally came HR round which had simple HR related questions to know if you are a good fit for the company or not.