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RozVibe vs ContactZapp

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

RozVibe compared with ContactZapp
Detail RozVibeContactZapp logo ContactZapp
What it doesPrivate encrypted journal and mood tracking app for Android Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.
StageStartup Not given
Founded2026 Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given 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
  • AES-256-GCM client-side encryption
  • Mood tracking with 5 emotional states
  • Rich-text journaling editor
  • Secure cloud sync
  • Calendar view with mood markers
  • Local mood analytics and insights
  • 4-digit PIN sanctuary lock
  • No data mining or profiling
  • PBKDF2 key derivation with 100,000 rounds
  • 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
  • Technically private through client-side encryption, not just a privacy promise
  • Encryption key never leaves your device or reaches servers
  • All analytics computed locally on your device
  • Never used to train AI models
  • Built by a solo developer for honest personal reflection
  • 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 planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)011
Referring domains (Majestic)21

4 details filled in for both companies.

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