Not the parent, but dwindling yubikey support (for gpg key storage) is an issue, had to pull out a legacy version on Android for it to keep working (they change

Not the parent, but dwindling yubikey support (for gpg key storage) is an issue, had to pull out a legacy version on Android for it to keep working (they changed the underlying crypto library and lost the support there) No ipad version I've found supports yubikey either