Lots of the kind of mistake one can make in ObjC and only notice at runtime, get caught at compile time in swift.
The frameworks are more of a mess: SwiftUI is something I want to like, but mostly gets in the way. There's now too many different ways to do background tasks, all promising to solve everything.
But you can still use UIKit and GCD, and I prefer to when I can.
Swift is a breeze compared to Objective C. Instead of conversion, consider rewriting it from scratch using Swift.
AWS DynamoDB
AWS Cognito
AWS Lambda for AI calls
Cocoa Control libraries for showing players challenges, progress, and unlocks
OneSignal Push Notifs to notify players of changing game state
I know that all of these have Swift libraries or probably some similar ones. And I've written some swift code. But I'm just wondering about the syntax shift or other gotchas that I may not be thinking about. Even things like connecting to the storyboard seem like they might have minor differences