App passwords let your iPhone sync the appointment Calendar (CalDAV) and the customer Contacts roster (CardDAV) from andrii.net, read-only and over TLS. Mint one per device; the password is shown once and can be revoked any time. Revoking a password (or locking the account) stops that device immediately. The calendar is a planning aid — email/SMS reminders remain authoritative, and same-day edits can lag while iOS polls.
This password is shown only once. If you lose it, revoke it and mint a new one.
Set it up on iPhone
One tap (recommended):
Open the downloaded file on the iPhone → Settings shows “Profile Downloaded” → Install. iOS marks an unsigned profile “Unverified” — that’s expected; it adds both accounts at once.
Or add the accounts by hand:
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