Knowto

Support

Last updated: September 8, 2026

How can we help?

Email knowto@lumik.space with a brief description of the issue. If possible, include your device model, operating system version, and the steps that led to the problem. Do not send passwords or other sensitive information.

Sign-in and sync

Check that your device is online and that you are signed in with the same account on each device. Your local notes remain available without an account; signing in enables sync. If the issue continues, contact us and mention the sign-in method you used.

Subscriptions

Apple manages purchases, renewals, and cancellations. You can review or cancel a subscription in your Apple Account subscription settings. For a purchase that is not appearing in Knowto, email us with the approximate purchase date. Do not include payment-card details.

Account and data requests

You can permanently delete your Knowto account and associated synced data from Account settings in the iOS app. For access or correction requests, or if you cannot use the in-app deletion flow, email knowto@lumik.space from the address connected to your account. We may need to verify account ownership before completing the request.

Privacy

Read the Knowto Privacy Policy for details about how the app handles information.