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PairOnce vs Mass Rename

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

PairOnce compared with Mass Rename
DetailPairOnce logo PairOnceMass Rename logo Mass Rename
What it doesFree file transfer between devices, no sign-up Batch rename files from a CSV or Excel mapping table without uploading them
StageNot given Not given
FoundedNot given Not given
Based inUS Not given
Pricing modelFreemium Freemium
PricingFree: basic file transfer, up to 2 GB per file, 200 MB per month relay data per device. PairOnce Pro: $3.99 a month or $29.99 a year; adds 5 GB relay data per month per device, files up to 10 GB, and higher tool limits. Free: rename up to 50 files per batch with all features. Lifetime licence: $19 USD one-time payment for unlimited files per batch.
Key features
  • Direct and encrypted file transfer between devices
  • Support for files up to 2 GB free, 10 GB with Pro
  • Automatic resume for large file transfers if connection drops
  • Works across different networks with relay when needed
  • Compatible with all major browsers and operating systems
  • Case-insensitive filename matching across CSV/XLSX files
  • Preview all conflicts before renaming
  • Download renamed files as ZIP
  • Rename photos by EXIF date taken
  • Support for CSV, TSV and Excel .xlsx formats
  • In-place folder renaming for Chrome and Edge
  • Generate rename scripts for Windows, Mac and Linux
  • Handle files in subfolders without moving them
  • Auto-numbering for duplicate filenames
What makes it different
  • No app, account or sign-up required
  • Files never stored on servers, end-to-end encrypted
  • Works across networks and Wi-Fi with direct connections when possible
  • Automatic resume of large transfers if connection drops within 30 minutes
  • 100% client-side processing—files never leave your browser or device
  • No account, signup or installation required
  • Works offline after the page loads
  • Free tier with full features for up to 50 files per batch
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)00
Referring domains (Majestic)00

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