AltStore, Delta, and other apps published by AltStore, LLC, do not collect any personal or identifying information whatsoever. For analytics purposes, we may record device models and iOS versions used, but this is completely anonymous and contains no identifying information.
AltStore requires your Apple ID email address and password in order to sign-in with Apple and configure your account for sideloading apps (for more information on why this is needed, see our FAQ). These credentials are sent only to Apple — not us or anyone else — then stored securely in your iOS device’s keychain for later use. In other words, we never see your email address or password, since they are stored on-device and never sent to anyone but Apple.