SwiftKey input method for Android has recently been updated to version 8.10.30.11, bringing a new feature for Android 13 users. After upgrading to the new version of SwiftKey, Android 13 users can change the language of SwiftKey via the System Settings app.
SwiftKey 8.10.30.11 changelog as follows.
Fixed the accessibility description of radio buttons in the theme selection
SwiftKey’s main app language can now be modified via Android 13 system settings
Microsoft announced last November that it was discontinuing the SwiftKey app for iOS, but announced another update a month later. The Android version of SwiftKey is not troubled by this and is frequently updated by Microsoft with new features and functionality.