SheetBrain vs ContactZapp

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

SheetBrain compared with ContactZapp
Detail	SheetBrain	ContactZapp
What it does	Google Sheets add-on that detects spreadsheet bugs and generates formulas in seconds	Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free plan: $0/month with unlimited Sheet Check scans and 15 AI calls per month. Pro plan: $9/month for 1,000 AI calls per month. Both plans include all tools (Check, Repair, Audit, Generate, Explain, Debug), shareable audit reports, and six custom functions.	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.
Key features	Broken reference detection and repair Mixed data type detection in columns Duplicate lookup key detection Visible formula error flagging (#N/A, #VALUE!, #DIV/0!, #REF!) AI-powered formula generation from plain English Formula explanation and debugging Schema repair for renamed and moved columns Six custom functions (HEALTH, ISSUES, GENERATE, EXPLAIN, EXTRACT, CLASSIFY) Multi-sheet context awareness for formula generation	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
What makes it different	Deterministic error detection without AI calls for basic spreadsheet health checks Reads full spreadsheet context (headers, data types, column positions) before generating formulas Flat $9/month pricing with AI included, no API keys required Schema Repair automatically fixes formulas after column changes without manual rewriting	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
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)	1 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	14	11
Referring domains (Majestic)	8	1

5 details filled in for both companies.

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