What is the difference between KeyChain and UserDefaults storage in iOS development?

KeyChain and UserDefaults are two different data storage mechanisms in iOS with different purposes.

• UserDefaults is intended for storing simple settings and user preferences (e.g., flags, interface settings). Data is stored in plist files and is not meant for storing confidential information.

• KeyChain is a secure storage for sensitive data such as passwords, tokens, and certificates. KeyChain provides encryption and protected access to data, making it preferable for storing secrets.

Thus, UserDefaults is used for simple settings, while KeyChain is used for sensitive information.