ContactKeeper: Contacts Backup

Find and merge duplicate contacts, then back up your address book – completely offline on your iPhone. ContactKeeper detects duplicates by name, phone number and email. Before you merge, back up everything as vCard, CSV or JSON. No cloud, no account, no subscription. FIND DUPLICATE CONTACTS – FREE • Finds duplicate contacts automatically and shows you how many there are • Compares name, phone number and email – not just identical names • Two people with the same name but different numbers stay separate • Merge with Premium: automatically or confirm each case yourself • On import: detects existing contacts and fills in what's missing instead of creating new duplicates BACK UP & EXPORT • Export contacts as CSV, vCard (.vcf) or JSON • Select individual contacts or all at once • Share via AirDrop or email, or save to iCloud Drive IMPORT & RESTORE • Restore contacts from CSV, vCard or JSON • Preview before import – you decide what to keep • Transfer contacts to a new iPhone • Multiple encodings (UTF-8, Windows-1252, ISO-Latin1) GROUPS • Create and manage contact groups • Export entire groups at once PRIVACY • Your contacts are processed only on your device and never sent anywhere • No cloud uploads, no servers, no account • No tracking • Privacy-friendly usage stats via TelemetryDeck (no personal data) GET STARTED FOR FREE • Find duplicate contacts • Export single contacts • Export up to 50 contacts as CSV • CSV import included PREMIUM – ONE-TIME PURCHASE, NO SUBSCRIPTION • Merge duplicate contacts • Unlimited export, all formats (CSV, vCard, JSON) • Merge contacts during import • Manage & export groups For iPhone, iPhone Duo and iPad. Requires iOS 26 or later. Privacy: https://www.contactkeeper.de/en/privacy