Not sure about SwiftKey
SwiftKey on iOS means giving it access to your contacts and your Gmail (so it can learn the way you type), then telling it your date of birth (so it can ensure it applies its "high standards" of data protection apparently), then it wants to send you notifications... Then once you go to enable it in the settings it encourages you to give "full access" which allows the app to transmit anything you typed and anything in your typing history back to the app owner.
Thanks but no thanks.
Biting the hand that feeds IT
