Understand privacy and data handling

No separate account

CNTC uses the Apple Account already signed in to iCloud on your compatible device. You do not create a CNTC username, password, or account. A random sharing identifier is kept in your private iCloud storage so invitations, participant names, and sharing activity can work across your devices without revealing your Apple Account to CNTC.

Lists and contacts

Shared contact entries and the fields selected for sharing are stored on your devices and synchronized through Apple iCloud. CNTC’s web services do not receive your address book or those shared contact details.

To operate invitation pages and identify participant activity, CNTC stores limited information such as a list title, an optional display name, link settings, an encrypted reference to the iCloud invitation, and random sharing identifiers. If you enable sharing notifications, it also stores an encrypted Apple notification token and internal subscription identifiers.

CNTC adds visible list names and selected shared contact details to the iOS system search index. That index stays on the device and can be controlled from iOS Settings.

Website data and reports

CNTC does not use advertising SDKs, cross-app tracking, or third-party analytics on invitation pages. Its web services retain only the limited technical information needed to operate invitations, security, and optional sharing notifications.

When sending feedback, you control the text and can omit a contact email, images, and limited app/device diagnostics. Selected images are resized and stripped of embedded metadata before CNTC emails the report to support. Support report threads are normally scheduled for permanent deletion 90 days after their latest message, subject to the exceptions explained in the Privacy Policy.