Do you have experience developing with Objective-C?

Yes, experience in Objective-C development includes working with classes, categories, protocols, memory management through ARC, and interaction with Cocoa Touch frameworks. For example, creating a class and method in Objective-C looks like this:

@interface MyClass : NSObject
- (void)sayHello;
@end

@implementation MyClass
- (void)sayHello {
    NSLog(@"Hello, Objective-C!");
}
@end

It is also important to understand syntax features, pointer management, and integration with Swift.