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Sealby vs Markedfile

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

Sealby compared with Markedfile
DetailSealby logo Sealby Markedfile
What it doesPrivate encrypted vault for iPhone and iPad with hidden vaults and no backdoor Invisible forensic watermarking for leak detection and leak tracing
StageNot given Not given
FoundedNot given Not given
Based inCZ US
Pricing modelFreemium Freemium
PricingFree: unlimited vaults, up to 100 files per vault. Premium monthly $2.99 USD, yearly $24.99 USD, lifetime $39.99 USD (prices vary by region; reference prices shown for United States). Free: $0/month (5 active files, detectable for 6 months, up to 5 MB per file, PDFs up to 10 pages). Starter: $9.99/month (50 active files, detectable until deleted, up to 10 MB per file, PDFs up to 50 pages). Pro: $19.99/month (no active-file cap, detectable until deleted, up to 20 MB per file, PDFs
Key features
  • AES-256-GCM encryption on the device with one key per file
  • Hidden vaults with different PIN opens different vault
  • No account, no server, no backdoor
  • Secure camera to capture photos and videos directly into vault
  • Support for photos, videos, documents and any file type
  • 12-word recovery phrase for every vault
  • Encrypted iCloud backup and multi-device sync with Premium
  • Vault sharing with Premium
  • Duress PIN that opens decoy vault
  • Folders, tags and search functionality
  • Mark PNG, JPEG, WebP images, PDFs, text files, and Office documents with invisible watermarks
  • Detect watermarks in screenshots and cropped copies of marked files
  • Assign custom private identifiers to track which recipient received each marked copy
  • Generate PDF evidence reports of detected watermarks on Starter and higher plans
  • Shared workspace collaboration on Business and Enterprise plans
  • Mark and detect API for Business and Enterprise plans
  • HMAC metadata mark embedded in all files across all plans
  • MCP integration with Claude, Cursor, VS Code, and ChatGPT on Pro and higher plans
  • 14-day free trial available for Starter, Pro, and Business plans
What makes it different
  • Deniable encryption with hidden vaults where no list of vault count is stored anywhere
  • All encryption happens on the device, not on servers
  • No account required, no signup or registration needed
  • Keys protected by Secure Enclave, unlocked only by your PIN or recovery phrase
  • Optional duress PIN that removes vaults from device when activated
  • Watermark remains invisible in ordinary viewing and does not alter file appearance
  • File contents never stored on servers, only detection metadata kept for security
  • Detection works on screenshots and edited copies through best-effort recovery
  • Free plan available with no credit card required to start
  • Marks detectable indefinitely on paid plans until file is deleted
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)36 −1 (down) since last check12 −1 (down) since last check
Trust Flow (Majestic)115
Citation Flow (Majestic)2119
Referring domains (Majestic)598

6 details filled in for both companies.

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