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Private Writing Assistant vs CardGo.AI

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 CardGo.AI
DetailPrivate Writing Assistant logo Private Writing AssistantCardGo.AI logo CardGo.AI
What it doesSpelling and grammar checks in 101 languages, run entirely on your device AI context cards for ChatGPT, Claude, Gemini, Perplexity and Grok
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free plan: $0 forever, 7 cards, CardGo AI: 10 messages and 10 hosted analyses a day. Pro plan: $9.90 per month, 50 cards, CardGo AI: 100 messages and 100 hosted analyses a day. Max plan: $19.90 per month, Unlimited cards, CardGo AI: 300 messages and 300 hosted analyses a day.
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
  • Save context once as encrypted cards with seven sections
  • End-to-end encrypted with AES-256-GCM
  • Works with ChatGPT, Claude, Gemini, Perplexity and Grok
  • Sync across devices
  • Card suggestions while typing
  • Create multiple context cards with different details
  • Filter sensitive details before sharing
  • Dream cards feature to auto-generate card suggestions
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
  • One card works across five different AI services
  • Eliminates need to re-explain context to each AI chat
  • No credit card required to start
  • Context attached only when you choose
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 check3 no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)026
Referring domains (Majestic)041

4 details filled in for both companies.

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