What methods do you use for storing and organizing data in applications?

In iOS, several approaches are typically used for data storage and organization depending on the volume and type of data:

• UserDefaults — for storing small settings and simple data (e.g., flags, user preferences).
• File system — for storing files, documents, images.
• Core Data — a powerful framework for working with object-oriented data models, supporting queries, relationships, and caching.
• Realm — a third-party database, convenient for mobile applications, an alternative to Core Data.
• SQLite — a relational database for more low-level SQL operations.

Example of using UserDefaults to save a string:

let defaults = UserDefaults.standard
defaults.set("value", forKey: "key")

let savedValue = defaults.string(forKey: "key")

The choice of method depends on data structure requirements, performance, and application complexity.