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Heptabase vs PaperBrain
Side-by-side comparison of features, pricing, and ratings
Pricing
Freemium
Freemium
Plans
$0/mo
$8.99/mo (billed annually) or $12/mo monthly
$17.99/mo (billed annually) or $24/mo monthly
$53.99/mo (billed annually) or $72/mo monthly
Free
$9.99 per month
Popularity
3.1k views
5.1k views
Skill Level
Intermediate
Beginner-friendly
API Available
Platforms
WebDesktopMobile
Web
Categories
🔬 Research & Education
🔬 Research & Education
Features
AI Tutor for structured learning sessions
Whiteboard and cards for visual thinking
Block-based editor
Bi-directional links
PDF annotation and highlights
Web clipper
Daily journals
Readwise integration
Zotero integration
YouTube source import
Note and journal support
CLI agent for coding workflows
Course syllabus creation
Works with Claude Code and Codex
Smart search across scientific papers
Audio podcast generation from PDFs
Easy document upload
Interactive Q&A chat with papers
Content exploration for latest research
Access to 100k+ researcher community
Free tier with basic features
Paper-to-podcast conversion
Integrations
Readwise
Zotero
YouTube
Claude Code
Codex