iOS 18.4, iPadOS 18.4 and macOS Sequoia 15.4 introduce a visual countdown timer for verification codes in Apple's built-in Passwords app.
The countdown timer appears as a gray circle that gradually fills with green, indicating the time remaining until the current verification code expires.
The timer is displayed in the Codes section of the app and also on saved password pages, provided two-factor authentication is set up.
Other changes in iOS 18.4 include the Priority Notifications feature, Safari's toggle for recent searches, and new widgets in the Control Center.