Heptabase vs Superhuman

Tagline

An intelligent, visual knowledge base built for students, researchers, and lifelong learners.

The fastest email experience, now with AI

Category

Pricing

Rating

Platforms

API

Open source

Description

Heptabase is a visual and intelligent knowledge base designed to help users master what they learn and conduct deep research. It combines a block-based editor, daily journals, PDF annotations, and bi-directional links with whiteboards and cards to help users clarify their thinking. It also features integrations with tools like Readwise and Zotero, as well as an AI Tutor to guide personalized learning sessions.

Superhuman uses AI to triage, summarize, and draft replies at keyboard speed.

Key features

• Whiteboards and Cards
• Block-Based Editor
• Bi-Directional Links
• Readwise Integration
• PDF Annotation
• Daily Journals
• Web Clipper
• Zotero Integration
• Heptabase CLI
• Heptabase AI Tutor

• Token-aware generation
• Component variants
• Auto-layout

Pros

• Enables visual organization using whiteboards and cards to clarify thinking and stay in flow.
• Allows building a connected knowledge base with bi-directional links, notes, and highlights in one place.
• Integrates directly with popular academic and reading research tools like Zotero and Readwise.
• Offers built-in PDF Annotation and Web Clipper features for seamless source gathering.
• Includes Heptabase AI Tutor, an AI agent guiding users through structured, personalized learning sessions.
• Supports a block-based editor alongside daily journals for versatile writing and note-taking.
• Provides native support across multiple desktop and mobile platforms including Mac, Windows, Linux, iOS, and Android.
• Allows users to publish and share their whiteboards with the community via Heptabase Gallery.

• Fastest keyboard-driven email
• AI-drafted replies
• Snippets and templates
• Send later and follow-up reminders
• Read receipts
• Split inbox
• Instant global search
• Polished, distraction-free UI

Cons

• No free pricing tier is listed on the pricing page.
• No public developer API documentation was found on the website.
• No open-source codebase or open-source licenses are mentioned on the site.
• Prohibits utilizing AI-generated output to develop foundation or large scale models that compete with the service.
• Specific compliance certifications such as SOC2 or ISO are not mentioned in the privacy policy.

• Expensive at $30/month
• Gmail and Outlook only
• Steep shortcut learning curve
• Requires onboarding call
• No family plan
• Limited mobile customization
• AI is a separate add-on cost
• Overkill for casual email users

Pricing plans

• ProUSD8.99/month
  • • For anyone building a lifelong knowledge base
• PremiumUSD17.99/month
  • • For learners and researchers who need extra AI credits at a lower cost
  • • Everything in Pro
• Premium+USD53.99/month
  • • For power users who want AI credits at the best discounted price
  • • Everything in Premium
  • • 33% discount for AI credits

• StarterUSD25/month
  • • Superhuman AI
  • • Email Productivity
  • • Calendaring & Scheduling
  • • Support & Training
• BusinessUSD33/month
  • • Team Collaboration
  • • For Sales
  • • Team Administration
  • • Security
• Enterprise—
  • • All-in Enterprise Pricing
  • • Custom Compliance Needs
  • • Google Advanced Protection
  • • Advanced Admin Controls
• FreeUSD0
  • • AI chat unlimited while in beta
  • • Correctness suggestions
  • • Tone detection
  • • Limited prompts
• ProUSD12/month
  • • Unlimited AI chat
  • • Inline suggestions
  • • Paragraph translation in 17 languages
  • • Paragraph rewrites in 24 languages
• BusinessUSD33/month
  • • Everything included in Pro, plus:
  • • Ask AI
  • • Write with AI (voice and tone match)
  • • Team collaboration
• Enterprise—
  • • Everything included in Business, plus:
  • • Advanced security and admin controls
  • • Custom roles and permissions
  • • Dedicated support team

Website