For iOS, the hackathon involves adding features to a code based compiled from previous interviewees. The unexpected part of this was finding that this was the app that got released to the public.
Anonimo
It's essential to demonstrate that you can really go deep... there are plenty of followup questions and (sometimes tangential) angles to explore. There's a lot of Software Engineer (Ios Developer) experts who've worked at DrChrono, who provide this sort of practice through mock interviews. There's a whole list of them curated on Prepfully. prepfully.com/practice-interviews