ContactZapp vs InStock Kitchen

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 InStock Kitchen
Detail	ContactZapp	InStock Kitchen
What it does	Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.	Track your pantry, fridge and freezer, find recipes using ingredients you have, and organize your grocery list.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
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.	Core features free; InStock Pro available as optional one-time purchase (exact prices shown in app)
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	Barcode scanning and manual item entry for inventory tracking Track fridge, freezer and pantry with freshness estimates Recipe discovery based on available ingredients Aisle-organized shopping lists for missing ingredients Weekly meal planning for breakfast, lunch and dinner Privacy Mode with on-device processing Import your own recipes with InStock Pro
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	Prioritizes ingredients that need to be used soon to reduce food waste Optional on-device privacy mode to keep photo and recipe processing local No ads in the app Works with flexible inventory tracking - track everything or just essentials
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	2

5 details filled in for both companies.

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