Which language for mobile development interview questions?

Career Advice
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I’ve been at my first job for over a year and I’m ready to find a new job. During my first year I’ve gained experience in native iOS / Android and Node. For my next job, I want to target iOS positions.

What language should I focus on to prepare for code questions for a mobile development interview?

My fear is that during a code interview I will start blending syntax between Swift / Kotlin / Javascript. For a “leetcode” style question, my preference is Javascript (because it’s “quick and dirty”). Also I’d hate to do a String related question in Swift (no direct index access to characters).

Any opinions / experiences with this? Should I just be ready for all three? Should I not worry about it so much because most interview code never gets compiled?

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If it’s specifically IOS then Swift and probably familiarity with ObjC or vice versa. If it’s React Native (and I guess some other stuff), then JS. Kotlin/Java is Android.

It kinda does – all characters in a string are indexed, so you can get/set characters at specific indices easily. String handling in Swift more verbose than JS, but the trade-off is that it’s better in many ways, a lot more specific

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