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Reference edition 2026.46

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Fenn vs Trailback

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

Fenn compared with Trailback
DetailFenn logo FennTrailback logo Trailback
What it doesPrivate AI for macOS that finds what you saved, saw, or heard Search your computer by describing what you remember
StageNot given Startup
FoundedNot given 2026
Based inFR IN
Pricing modelPaid Paid
PricingFlex: $9/month billed annually with 6+ months free. Lifetime: $249 one-time payment with 6+ months free, includes 1 year of updates and lifetime access. Teams: $999 one-time payment with 6+ months free, includes all features for 5 Macs, lifetime access, and 1 year of updates. $9 lifetime one-time payment for all features on Mac and Windows
Key features
  • Search inside 100+ file types including PDFs, videos, audio, images, documents, and design files
  • Screen memory search to recall meetings, chats, shared screens, and dashboards
  • Semantic and keyword search across files
  • Agentic search to find files matching specific criteria
  • Face recognition search
  • Auto-organize folders with files matching your criteria
  • Rename files automatically based on their content
  • Chat with files privately with citations to the source
  • Extract file data to CSV format
  • Anonymize sensitive information before sharing files
  • Search by description across websites, files, screenshots and copied text
  • Remembers browser history, files, screenshots and copied text offline
  • Quick Search overlay accessible from any app
  • Collections to sort files by source, type or project
  • Tidy feature to rename messy files and organize downloads
  • Your Week view showing projects, files and pages from each week
  • Pick a time feature to view and reopen everything from a specific moment
  • Browser extensions for Chrome, Edge, Firefox, Brave, Safari and Comet
What makes it different
  • Works offline with no file uploads required
  • Search across screen memory for content that was never saved as files
  • Supports 100+ file types from documents to creative files to code
  • Unlimited private AI chat with your files
  • One-time $9 lifetime payment with no subscription or monthly fees
  • Searches by content and meaning, not just filenames
  • Never records screen, sees passwords or reads private browsing
  • Works across all activity—websites, files, screenshots and copied text
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)12 +1 (up) since last check10 +4 (up) since last check
Trust Flow (Majestic)92
Citation Flow (Majestic)2117
Referring domains (Majestic)1636

6 details filled in for both companies.

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