Contactio

Clean duplicates safely: review, merge, and fix your contacts—on device.

Clean up your contacts. Keep your data private. Scan your contacts directly on your device to find duplicates and data issues. Everything stays local. No cloud upload. No tracking.

What it does

On-device contact scanning for duplicates and data problems Smart duplicate detection across name, phone, email, and other fields Review duplicate groups and merge contacts by selecting the best master contact Preview exactly what will be kept before merging and exclude unwanted items

Fix common contact issues

Missing name Missing first name or last name Missing phone number Missing organization, inferred from email domain Broken or messy names with extra spaces, strange characters, or casing issues

Powerful tools

Bulk actions to merge or delete multiple contacts in one step Optional backup before merge and Undo via the in-app Merge Archive (vCard restore) Organization standardization to merge and normalize different organization variants Fast search across scan results to find people, companies, phone numbers, or emails Optional filtering using Contacts app groups and lists

Privacy first

All processing happens on your device No cloud upload No data sharing