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PaperCheck vs Opsis

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

PaperCheck compared with Opsis
DetailPaperCheck logo PaperCheckOpsis logo Opsis
What it doesAI Paper Supervisor for Academic Writing Autocomplete and AI assistant for Mac and Windows, built on a private account of your work
StageNot given Startup
FoundedNot given 2026
Based inCH AU
Pricing modelFreemium Freemium
PricingFree tier available; Plus and Ultimate paid plans with credit system (1 credit per 100 words). One-time packages and monthly subscriptions available with money-back guarantee within 14 days. Not given
Key features
  • Paper analysis with scoring across multiple dimensions
  • Plagiarism detection and AI-written text identification
  • Citation style and consistency checking
  • Logical error and argumentation analysis
  • Grammar, spelling and inclusive language errors
  • Bibliography verification against trusted databases
  • Custom requirements upload for university-specific guidelines
  • Prioritized to-do list for revisions
  • Defense Studio with voice practice and recorded sessions
  • Page-by-page feedback with inline corrections
  • Autocomplete with Tab to accept drafts
  • Error detection and fact-checking
  • Cross-app integration
  • Source attribution for every suggestion
  • Context-aware AI assistance
  • One-click pause and privacy control
  • Encrypted data storage
  • Read-only app connections
  • Natural writing style matching
What makes it different
  • Feedback typically delivered within 5 minutes using parallel processing
  • Comprehensive analysis across structure, logic, language, citations and plagiarism
  • Data protection with no training on user documents and user-controlled deletion
  • Money-back guarantee within 14 days if unsatisfied
  • Trusted by over 5000 students and universities globally
  • Finishes sentences from your actual work history and connected files, not generic AI
  • Shows source for every suggestion so you can verify it before accepting
  • Catches mistakes and contradictions between what you're writing and your work history
  • Works inline in the apps you already use without installation
  • You stay the author with full control over what gets written
Community votes00
DR (Domain Rating by Ahrefs)18 −2 (down) since last check4 no change since last check
Trust Flow (Majestic)100
Citation Flow (Majestic)2512
Referring domains (Majestic)611

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