You can use DoWat without an account. Which information leaves your device
depends on the features you use. Technical error diagnostics also run without
an account.

## Without an account

Tasks and settings stay in the browser or app you are using. They do not
automatically appear on another device. Clearing app or browser data can
remove that local copy.

Apple calendars are read on your iPhone. For an ICS link, the DoWat server
fetches the calendar for you, which requires sending it the private link.
A normal calendar connection does not give other DoWat users access to your
appointments.

## With an account

Tasks are stored under your account and synced between signed-in devices.
Connected services may require additional credentials. A Google calendar
selection belongs to your account; a local Apple or ICS selection applies
to that device.

Not all settings sync. On a new device, check your calendars, planning hours,
and reminders in particular.

## When you use AI

Only an explicitly requested AI action sends the displayed text to the selected
provider. Normal task capture does not need AI. Before a request, you can see
which provider is used and how usage is billed.

Your own AI keys are encrypted in storage. A monthly usage counter manages
your allowance. Review AI suggestions before accepting them.
[More about capture](/docs/en/planning/capture).

## Claude and ChatGPT

An authorised connection can send tasks to DoWat and manage suggestions that
have not yet been collected. It cannot read your existing task list or calendar.
Disconnect it in Settings whenever you choose.

Open DoWat after sending tasks so they can be collected. Uncollected tasks
expire after 24 hours and may be lost if the server restarts.

## Technical error diagnostics

DoWat reports technical errors to Thermite on a VPS in the EU. Reports can
include error messages, stack traces, app version, and technical device details.
In the browser, they include the browser identifier and page address open at
startup. Previous technical logs can be included as context; this log history
is disabled on the shared server.

Diagnostics run without an account too. We do not attach an account identifier
or your entire task list. Error messages and page addresses can nevertheless
contain personal information. Transmission also involves your IP address.
Random session identifiers and error status help assess version stability.
Clicks, keystrokes, and screen views are not recorded.

Error reports are automatically cleaned up after 90 days. Aggregate error
counts may remain longer. For questions or to object, use
[Contact & feedback](/contact). The [privacy policy](/legal/privacy) explains
the processing in detail.

## Export and delete

Under **Settings → Your data**, export or delete your server data.
Saved credentials are excluded from the export.

**Delete server data** removes tasks and connections from the server and signs
you out. The device copy remains. The AI usage counter stays until the end of
the month. This action does not delete your sign-in account. For complete
account deletion, use the contact in the [imprint](/legal/imprint).