| What it does | Not given
| Read papers. Keep what you learn.
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Free: Read unlimited PDF and EPUB files with offline access, highlights, notes, and themes. Pro: $10 one-time payment for one year of cloud sync to your own Google Drive. No auto-renew.
| Free: desktop app and self-hosted server. Lite: $2/month or $20/year. Plus: $5/month or $50/year. Pro: $20/month or $200/year.
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| Key features | - Read DRM-free PDF and EPUB files
- Offline reading after opening a book
- Four highlight colors with notes
- Per-book journal for notes and thoughts
- Local browser storage by default
- Optional Google Drive backup and sync with Pro
- Multiple themes and reading fonts
- Search within books
- Reflowable EPUB with pagination and table of contents
| - Highlight, draw, and annotate on PDFs with every mark becoming a note
- Outliner with live Markdown and LaTeX for mathematical notation
- AI chat to ask questions about papers with cited answers
- Full-library search across notes, highlights, and all PDFs
- Shared workspaces with live cursors and comments for collaboration
- Works offline on iPad, Android, and desktop with automatic sync
- Integrations with Zotero, Obsidian, Logseq, and Notion
- Browser extension for one-click saving papers with metadata
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| What makes it different | - Private by default with no account or uploads required
- One-time Pro payment with no auto-renew subscription
- Files always stay in your own Google Drive with Pro
- 7-day full refund guarantee on Pro
| - Self-hosted option with one Docker image for full control over data
- Live math support with Markdown and LaTeX directly in outliner notes
- Works on any device: Windows, macOS, Linux, iPad, Android, and browsers
- No vendor lock-in with SQLite files and export at any time
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 9 ● no change since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 3 | 0 |
| Citation Flow (Majestic) | 18 | 9 |
| Referring domains (Majestic) | 38 | 1 |