Terms
Short, because the service is simple. Last updated 26 September 2026.
The service
Callendar places a phone call before timed events in the Google calendars you select, at the lead time you choose. It is provided by Hannes Hennerbichler.
Subscription
Callendar is an auto-renewing subscription bought through the App Store: $6.99 a month or $49.99 a year, each starting with a 7 day free trial. Payment is charged to your Apple ID at the end of the trial and at each renewal unless you cancel at least 24 hours before the period ends. Manage or cancel it in your App Store account settings. Refunds are handled by Apple under its terms.
No guarantee of delivery
We do our best, and we retry once when a call does not connect, but phone networks, carriers, Google and our own servers can fail. Callendar is a convenience, not a safety system. Do not rely on it for anything where a missed call would cause harm.
Fair use
One account per person. Test calls are limited to three a day. We may suspend accounts that abuse the verification or test call features.
Changes and termination
You can delete your account at any time in Settings. We may change these terms or stop the service with reasonable notice.