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Private Writing Assistant vs Histiq

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

Private Writing Assistant compared with Histiq
DetailPrivate Writing Assistant logo Private Writing Assistant Histiq
What it doesSpelling and grammar checks in 101 languages, run entirely on your device AI semantic search for your browser history and PDFs
StageNot given Startup
FoundedNot given Not given
Based inNot given US
Pricing modelFree Freemium
PricingNot given Free 14-day trial (no credit card required, starts on install). Then: Monthly $6.99/mo, Annual $4.17/mo (billed $49.99/year, save 40%), or Lifetime $129 one-time payment.
Key features
  • 101 languages supported with automatic language detection
  • Runs on device using Chrome's built-in AI model
  • Works in email drafts, Google Docs, and Google Slides
  • Fix single mistakes or all corrections at once
  • Toggle checking on and off with visible AI status
  • Semantic search by meaning instead of exact keywords
  • Automatic PDF indexing and search
  • Sub-50ms search latency
  • Works on Chrome and Edge from single install
  • Privacy controls including domain blocklist and URL patterns
  • Encrypted local backup and export
  • No account or login required
  • Support for PDFs up to 50 MB
What makes it different
  • Nothing sent to servers - all processing happens on your device
  • Supports 101 languages with automatic detection
  • Uses Chrome's native AI - no external model required
  • Works seamlessly across text boxes, email, docs and slides
  • Only browser history tool that is 100% local with zero data transmission to servers
  • Includes full 14-day free trial with no credit card required
  • Works across Chrome and Edge without requiring separate installs
  • Lifetime purchase option with no recurring billing
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)Not checked yet no change since last check1 no change since last check
Trust Flow (Majestic)02
Citation Flow (Majestic)015
Referring domains (Majestic)030

4 details filled in for both companies.

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