Open the calendar section in **Settings**. A calendar is optional.
You can capture tasks and use timers without connecting one.

## Apple calendars on iPhone

Select the calendars DoWat should use and allow calendar access.
DoWat reads their appointments without changing them. The selection applies
to this iPhone.

If you previously denied permission, enable it in **iPhone Settings**,
then check your calendar selection in DoWat again.

## Google Calendar

Sign in to DoWat first. When the Google connection is available, choose
**Connect Google**, confirm access, and select your calendars. Check the
preview before saving.

This connection is shared through your DoWat account. You can use the same
selection on another device. If that device already uses Apple calendars or
an ICS link, explicitly switch it to Google.

The Google connection reads calendars. It does not reserve time in Google.
[Writing calendar blocks](/docs/en/calendar/hold-your-blocks) is a separate feature.

## Use a calendar link

Under **More connections: ICS and CalDAV**, enter a private ICS subscription
link. Your calendar provider usually lists it under sharing or subscription
settings.

Treat this link like a password: someone who has it may be able to read your
appointments. Do not share it in public messages.

The link stays on this device. To fetch events, it is sent to the DoWat server,
which returns the calendar entries.

## If appointments are missing

Check the selected calendars, the connection, and the date you are viewing.
Google changes are refreshed periodically while you use DoWat and may not
appear immediately. Reconnect Google if DoWat asks you to sign in again.

A local Apple or ICS selection takes priority over the shared Google selection.
This lets you choose the calendar source separately on each device.