Your contacts stay on your device.

ContactsDeduper finds duplicate contacts on your iPhone or Mac, so you can review and merge them carefully. Create a backup before changes, and restore anytime.

Get supportRead the privacy policy
9:41••• ◔ ▰
ContactsDeduper⚙

Duplicate groups

Review groups and merge the ones you want to keep.

3 groups
John Appleseed3 contactsJane Smith2 contactsDavid Johnson2 contacts

Review a group

Choose the contact to keep.

1 of 3
⌁John Appleseed3 possible matches
John AppleseedAppleseed Inc.
john@appleseed.comKeep
J. AppleseedAppleseed Inc.
john.appleseed@icloud.com
John AppleseedAppleseed Inc.
john@mac.com
Merge 3 Contacts
⌘Duplicates✓Merged⚙Settings
Support

For help, use GitHub Issues. Do not attach real contact data or backup files.

What it does

Finds duplicate contacts, including same name, phone, email, and more. You review each group and decide what to merge.

Built for careful cleanup

Preview every duplicate set before merging. Choose which details to keep, and see the result before you confirm.

Backup and restore

Create a full backup of your contacts before you make changes. Restore anytime if you need to.

Questions & answers

Does ContactsDeduper upload my contacts?

No. Your contacts are processed locally and are never uploaded to us.

Is it safe to merge contacts?

You can preview every duplicate set and choose exactly what to keep. Export a backup before changes.

Can I restore my contacts?

Yes. Restore from a backup you created with ContactsDeduper.

Which devices and versions are supported?

ContactsDeduper supports iOS 17 or later and native macOS 14 or later.