Aislingeach for iOS does not collect any information about you or your usage of the app, beyond anonymous statistics that you allow to be sent to Apple via a setting on your device. Under no circumstances is any information sent from your app to any third-party (non-Apple) servers without your explicit request. Since no data is collected from Aislingeach, no data relating to you can ever be stored or sold.
Your usage of the AI Horde is governed by the AI Horde Privacy Policy, which you should read.