Skip to main content
SaaS Directory Info

Reference edition 2026.46

Sign in

Markedfile vs ProximityLock

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

Markedfile compared with ProximityLock
Detail MarkedfileProximityLock logo ProximityLock
What it doesInvisible forensic watermarking for leak detection and leak tracing Automatically lock your Mac when you walk away using Bluetooth
StageNot given Not given
FoundedNot given Not given
Based inUS Not given
Pricing modelFreemium Paid
PricingFree: $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 $14.99 one-time purchase, plus applicable taxes. 14-day free trial. 30-day money-back guarantee.
Key features
  • 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
  • Automatic locking when device moves out of Bluetooth range
  • Auto-unlock when device returns
  • Run macOS Shortcuts on leave and return
  • Live signal graph showing Bluetooth strength
  • Activity monitoring to prevent false triggers
  • PIN-protected settings
  • Scheduled hours for when actions run
  • Touch-to-unlock on any Mac
  • Customizable Bluetooth signal thresholds
  • Support for iPhone, Apple Watch, and Android devices
What makes it different
  • 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
  • Works without requiring any app installation on iPhone or Apple Watch
  • One-time purchase with no subscription required
  • Uses only local Bluetooth monitoring, no constant network access needed
  • Apple notarized and signed with Developer ID for security verification
  • Supports unlimited Macs with single license for personal use
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 (down) since last check15 −1 (down) since last check
Trust Flow (Majestic)52
Citation Flow (Majestic)1917
Referring domains (Majestic)812

5 details filled in for both companies.

More alternatives to Markedfile More alternatives to ProximityLock

Questions?