Swift is considered the best programming language for developing iOS app. As it’s a modern, fast, clear and evolved programming language due to its series of reasons and they include improved performance for apps, its compatibility with multiple mobile device, dynamic libraries linking, and swift app development traits.
Additionally, it offers the features of easy code readability and maintenance, safe and secure platform, with the compatibility of Objective C and integrated memory management. Lastly it’s a highly recommended programming language due to its robust and scalable features.