ContactZapp vs Linger

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ContactZapp compared with Linger
Detail	ContactZapp	Linger
What it does	Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.	A private, local-first image organizer for design references
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Paid
Pricing	Free plan: 2 synced accounts, 100 contacts, no time limit. Easy plan: $4.00/month (billed $47.94/year, was $95.88). Unlimited plan: $8.00/month (billed $95.94/year, was $191.88). 50% off Easy and Unlimited with code HALLOWEEN.	Personal $39 USD one-time for 1 person on 2 Macs with Linger 0.x and 1.x updates included; Lifetime $79 USD one-time for 1 person on 4 Macs with all future major upgrades included. 14-day full trial available with no card required.
Key features	Two-way sync across Google, Microsoft, Apple and CardDAV Merge duplicates in one go, or review them one by one Full change history with undo capability Backups and vCard export Sync frequency control (hourly, daily, or manual) Set accounts to read-only mode Preserve all phone numbers and email addresses Up to 5 encrypted account backups 12-month undo history Restore deleted contacts for 12 months	Add personal notes and tags to each reference Multiple view modes: grid, stack and focus views Text search across titles, notes and tags Canvas feature to arrange references side by side Collections and saved searches Local library with no cloud sync required Optional AI for text extraction and descriptions Chrome extension for easy capture No item count limits
What makes it different	Syncs across all major platforms in both directions automatically Encrypted contacts with privacy key per account Undo any change for up to 12 months No time limit on free plan Automatic duplicate detection and optional auto-merge	Private local-first library that keeps your data on your device with zero cloud dependency One-time purchase with permanent access, no monthly subscriptions Canvas tool to explore visual and conceptual relationships between references
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	11	13
Referring domains (Majestic)	1	1

5 details filled in for both companies.

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