Help

CNTC treats sharing as a per-contact, per-field choice.

When adding contacts, tap Review after making your selection. Open each contact to confirm its shared fields before tapping Add.

To change an existing shared contact:

1. Open the contact from its list.
2. Tap the More button and choose Shared Fields. You can also touch and hold the contact in the list and choose Shared Fields.
3. Turn individual details on or off.
4. Return to the contact when finished; changes synchronize through iCloud.

A name is always included so the entry is understandable. Review fields such as photos, dates, addresses, relationships, and online profiles before enabling them.

CNTC does not request permission to access Contact Notes. The app cannot read them or include them in a shared list; Shared Fields shows Contact Notes as unavailable so you know they remain private.

Owners can change the shared fields for any contact in their list. A participant with Can Edit access can change fields only for contacts they added. A View Only participant cannot change shared fields.

Open a list and tap Manage Sharing in the bottom toolbar. You can also touch and hold the list on the Lists screen and choose Manage Sharing. Link actions depend on the current access mode.

Invite Only

• Tap Invite Someone, choose Can Edit or View Only, then create the invitation.
• Choose Share Invitation, Copy Invitation Link, or Show Invitation QR Code.
• Turn on Approval Link to share, copy, or show a QR code that lets people request access.

Personal invitation links are intended for their selected recipient. Approval Links can be passed to anyone you are willing to consider for access.

Anyone with Link

Use the buttons under Public Link to share it, copy it, or show its QR code. Anyone who receives that link can join with the public permission currently selected by the owner.

Scan a QR code

From the Lists screen, tap Scan Invitation and point the camera at a CNTC invitation QR code. Allow camera access when asked. CNTC does not save or upload camera images.

If scanning is unavailable, open the invitation link directly instead. Ordinary QR scanners and the iPhone Camera app can also open CNTC links.

Open the list and tap Manage Sharing in the bottom toolbar. You can also touch and hold the list on the Lists screen and choose Manage Sharing. Owners can manage the following sections when they apply:

• Pending Invitations: share or copy a personal link again, show its QR code, change its permission, or cancel it.
• Access Requests: approve as Can Edit or View Only, deny the request, or block future requests from that person.
• Participants: change a participant’s permission or remove their access.
• Blocked People: unblock someone so a future request can be considered.

If you cannot add contacts

Check the list role shown in CNTC. View Only participants can view and import shared contacts but cannot add or change them. Ask the owner to open Manage Sharing, find you under Participants, and change your permission to Can Edit.

Participants joining through Anyone with Link share the public link’s permission. The owner changes it from the Permission control in Manage Sharing.

Viewing participants

If you joined someone else's list, open the list, tap More, and choose Participants. You can also touch and hold the list on the Lists screen and choose Participants. The owner appears first, followed by accepted participants. Your entry is marked You, alongside your access permission. Pull down to refresh after membership changes.

Removing access or stopping sharing

Removing someone prevents future access through iCloud after the change synchronizes. It cannot remove contact details that person already imported, copied, or saved elsewhere.

Stop Sharing ends the shared list for all participants but does not delete the owner’s local list. Deleting the list is a separate action.

Search across CNTC

Use the search field on the Lists screen to find matching lists and contacts together. A matching contact result shows the list it belongs to; selecting it opens that contact in its list.

Search within a list

Open a list and use its search field to narrow only that list’s contacts. CNTC can match names and available shared details such as phone numbers, email addresses, and organization information.

Search from iOS

CNTC adds visible lists and shared contacts to the iOS system search index. Selecting a CNTC result opens the corresponding list or contact in the app.

To hide CNTC content from system search, open iOS Settings, find CNTC’s search settings, and turn off Show Content in Search. The location and wording can vary by iOS version.

To import several contacts:

1. Open a list, tap the More button, and choose Select Contacts.
2. Select the contacts you want, then tap Import.

You can also touch and hold a list on the Lists screen and choose Import Contacts to start selecting contacts.

Before importing, CNTC shows how many new Apple Contacts entries will be created. Selected contacts that already match Apple Contacts entries are skipped.

To import one contact, open it, tap the More button, and choose Import. You can also touch and hold the contact in its list and choose Import Contact.

CNTC compares the shared details with Apple Contacts entries it can access before writing anything:

• If there is no match, create a new Apple Contact or choose an existing contact to update.
• If CNTC finds one match, you can open it before deciding what to do.
• If several contacts match, review them carefully to avoid creating a duplicate.

An imported contact becomes a separate local Apple Contacts copy. Later shared-list changes do not automatically update that copy. Import again when you want to review newer shared details.

Remove contacts from a list

Open the list, tap the More button, choose Select Contacts, select one or more entries, then tap Remove. You can also swipe a contact or touch and hold it to remove that contact directly.

An owner can remove any contact from their list. A participant with Can Edit access can remove only contacts they added. A View Only participant cannot remove contacts.

Removing a shared contact does not delete an imported copy from Apple Contacts.

Delete a list you own

Open the list, tap the More button, and choose Delete List. You can also touch and hold the list on the Lists screen and choose Delete List. The list and its shared contacts are removed for every participant after the change synchronizes. Imported Apple Contacts copies remain.

Leave a list shared with you

Open the list, tap the More button, and choose Leave List. You can also touch and hold the list on the Lists screen and choose Leave List. The shared list is removed from CNTC on your device. Contacts you previously imported remain in Apple Contacts.

Removing access, deleting a list, or leaving cannot erase information that someone already copied, exported, or saved elsewhere.

1. Open Settings in CNTC.
2. Find the Display Name section.
3. Enter the name you want people to see.
4. Tap Save.

CNTC can show this name to people you share lists with, including on invitation pages, in sharing notifications, and when identifying who added a contact. It is separate from the names in Apple Contacts and does not rename your Apple Account.

To stop using a customized name, clear the field and save. CNTC then uses a generic label where a name is needed.

1. Open Settings in CNTC.
2. Tap Sharing Notifications.
3. If the status is Not Set Up, allow notifications when iOS asks.

After the first choice, tapping Sharing Notifications opens the system notification settings for CNTC. There you can turn delivery on or off and choose alert styles. Deliver Quietly means iOS is delivering notifications without prominent alerts.

Sharing notifications can cover events such as access requests, approvals, invitation acceptance or cancellation, permission changes, participant removal, or the end of sharing. Delivery is best effort; Manage Sharing shows the authoritative current access state.

Notification payloads do not contain contact details or invitation links.

CNTC shows synchronization status in Settings → Sync Status and may display a banner when attention is needed. The status screen shows Apple Contacts and iCloud availability along with the latest known check, send, and receive times.

If a list is not current:

1. Confirm the device is online.
2. Confirm you are signed in to the expected Apple Account and iCloud Drive is available.
3. Open Settings → Sync Status and tap Refresh Status.
4. Follow any Contacts-access or Apple Account guidance shown there.
5. Leave CNTC open briefly so iCloud can finish processing changes.

Synchronization can be delayed while CNTC is offline, checking Apple Contacts, sending local changes, receiving shared changes, or joining a new list. Do not delete the app or shared list as a first troubleshooting step.

1. Open Settings → Send Feedback.
2. Choose Bug or Issue, Feature Request, or Other Feedback.
3. Add a short subject and a useful description.
4. Optionally add a contact email if you want CNTC support to reply.
5. Optionally attach up to three screenshots or photos through the system image picker. Videos and other files are not supported.
6. Review Include Diagnostics and turn it off if you prefer.
7. Submit the report.

Selected images are resized and stripped of embedded metadata such as location before sending, but information visible in the image remains. Diagnostics are limited to app version/build, iOS version, device model, and app locale. CNTC never automatically attaches contacts, list names, internal iCloud identifiers, invitation URLs, or purchase identifiers.

Do not include private contact information, passwords, payment details, invitation links, or other sensitive information in the description or images. If feedback cannot be sent from the app, email support@cntc.app.

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.