I had two rounds of interviews. The first was with HR, covering simple, general questions about myself and my background. The second was a technical interview focused entirely on iOS. I received some UIKit-related questions. My impression is that the developers there are still working with an older stack, though I could be wrong.
Overall, the interview wasn’t particularly difficult, but I decided not to proceed after hearing that they sometimes exaggerate developer experience to attract more clients. For example, a colleague of mine from university, who is one year younger than me, somehow had four additional years of experience listed on LinkedIn, which I find quite shameful.