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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

Heuristica logo
Heuristica
✓ verifiedFreemium

An AI-powered learning platform that turns sources into concept maps, flashcards, quizzes and summaries with multi-model chat.

89K visits/mo12K saves
elium.com logo
elium.com
✓ verifiedPaid

Enterprise AI knowledge-management platform for building a governed, searchable company knowledge hub teams actually use.

26K visits/mo
Cogram logo
Cogram
✓ verifiedFree trial

AI platform for architects and engineers automating RFIs, submittals, meeting minutes, field reports, and email filing.

4.0K visits/mo4.5K saves
Recall logo
Recall
✓ verifiedFreemium

AI knowledge base that saves, summarizes and connects articles, videos, podcasts and PDFs into a graph you can chat with.

152K visits/mo1.5K saves
Pricing
Basic: Free (up to 3 saved concept maps)
Professional: $7.99/mo (unlimited maps, multi-model AI, all features)
Team: 15€/user/mo billed yearly
Corporate: 20€/user/mo billed yearly

Free trial available

Individuals: $39/mo

Free trial available

Free: $0 (10 AI summaries/mo)
Plus: $10/mo billed yearly (unlimited summaries)
Max: $38/mo billed yearly (bulk actions, model choice)
Core features
  • Concept map builder
  • Flashcards with spaced repetition
  • AI quiz and summary generation
  • Import from PDFs, YouTube, websites, PubMed and arXiv
  • Multi-model AI chat (GPT, Claude, Gemini, Qwen)
  • Cross-format conversion and sharing
  • AI-powered search and answers
  • Content approval and expiration workflows
  • Multi-language sharing with AI translation
  • Templates and rich content creation
  • Microsoft, Slack, Google Drive integrations
  • ISO 27001 security, EU hosting, GDPR
  • AEC-specific AI assistant for documents
  • Automated RFIs and submittals (Procore integration)
  • Meeting minutes automation
  • Voice-and-photo field reports
  • AI email filing and search
  • SOC 2 Type II security with private/on-prem options
  • One-click saving of articles, videos, podcasts, PDFs
  • AI summaries of saved content
  • Automatic tagging and knowledge-graph linking
  • Chat with your knowledge using GPT, Claude or Gemini
  • Spaced-repetition quizzes
  • Browser extension, web and mobile apps; API/MCP access
Use cases
  • Visualizing and studying complex topics
  • Turning research sources into study materials
  • Literature review and dissertation prep
  • Central company knowledge base
  • Customer support and IT service desk
  • Onboarding and knowledge retention
  • Market watch and user insights
  • Automate RFI and submittal logging
  • Generate meeting minutes in your templates
  • Create field reports from voice and photos
  • File and search project email automatically
  • Streamline contract administration
  • Building a personal 'second brain'
  • Summarizing long content to save time
  • Chatting with your own saved knowledge
  • Retaining what you read via spaced repetition
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