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Simple Memo vs ContactZapp

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

Simple Memo compared with ContactZapp
DetailSimple Memo logo Simple MemoContactZapp logo ContactZapp
What it doesAI auto-tagging voice notes to email and Obsidian Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.
StageStartup Not given
Founded2026 Not given
Based inJP Not given
Pricing modelNot given Freemium
PricingFree: up to 3 sends per day, no time limit. Premium Monthly: $2.99/month for unlimited sends. Premium Yearly: $29.99/year for unlimited sends. 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
  • 0.4-second launch time (warm start on iPhone 16e)
  • One-tap send to email
  • On-device voice input (iOS 16+)
  • AI auto-tagging with title, tags, and type
  • Offline Outbox with auto-resend
  • AES-GCM-256 encryption for stored data
  • Obsidian integration without plugin
  • Apple Watch support
  • Send history and resend capability
  • No account required
  • 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
  • On-device AI tagging that never leaves your iPhone
  • Memobodies not persistently stored on servers
  • Built as a direct Captio replacement with modern technology
  • Works offline with automatic retry when reconnected
  • 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)10 −5 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)190
Citation Flow (Majestic)3011
Referring domains (Majestic)1561

4 details filled in for both companies.

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