Heptabase
Tettra
| Feature | Heptabase | Tettra |
|---|---|---|
| Pricing | From $11.99/mo | Free / from $8.33/mo |
| Free Plan | ✗ No | ✓ Yes |
| Rating | 4.6 / 5 | 4.3 / 5 |
| Best For | researchers, students, visual-thinkers, phd-students | growing-teams, ops-teams, people-teams, customer-success |
| Founded | 2021 | 2016 |
| Whiteboards | ✓ | ✗ |
| Card System | ✓ | ✗ |
| Mindmaps | ✓ | ✗ |
| Journal | ✓ | ✗ |
| Tags | ✓ | ✗ |
| Pdf Annotation | ✓ | ✗ |
| Ai Answers | ✗ | ✓ |
| Slack Bot | ✗ | ✓ |
| Verification Cycle | ✗ | ✓ |
| Page Suggestions | ✗ | ✓ |
| Categories | ✗ | ✓ |
| Analytics | ✗ | ✓ |
✓ Heptabase Pros
- Visual-first approach to note-taking
- Whiteboards for spatial thinking
- Card-based system is very flexible
- Great for research and learning
✗ Heptabase Cons
- No free plan
- Mobile app is limited
- Steeper learning curve than simple note apps
✓ Tettra Pros
- AI answers questions from your knowledge base
- Slack bot for instant answers
- Content staleness alerts
- Simple editor non-technical teams love
✗ Tettra Cons
- Limited formatting options
- No public-facing documentation
- Smaller feature set than Notion
The Verdict
Heptabase is built for researchers and students, with a focus on whiteboards and card-system. Tettra targets growing teams and ops teams and leads with ai-answers and slack-bot.
Pricing is close: Tettra starts at $8.33/mo versus $11.99/mo for Heptabase — not a deciding factor on its own.
Tettra has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. Heptabase requires a paid subscription from day one.
Bottom line: Heptabase has a slight overall edge — but if ai answers questions from your knowledge base matters most to you, Tettra may still be the right call.