A privacy-focused personal knowledge management system that allows offline use and encrypted data synchronization. It combines blocks, outlines, and bidirectional links to enhance thinking processes.




164+ iOS apps & games curated and reviewed
Finding the right siyuan apps and games can be overwhelming with so many options. We've analyzed 164+ apps and games to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 3.9★ (30) | No | Yes | Oct 2026 | ||
| 2 | Free | 4.5★ (2.8K) | No | No | Oct 2026 | ||
| 3 | Free | 4.4★ (264) | No | No | Oct 2026 | ||
| 4 | Free | 4.4★ (23) | No | Yes | Oct 2026 | ||
| 5 | Free | — | No | Yes | Sep 2026 | ||
| 6 | Free | — | No | Yes | Oct 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | 3.0★ (1.8K) | Yes | No | Oct 2026 |




A privacy-focused personal knowledge management system that allows offline use and encrypted data synchronization. It combines blocks, outlines, and bidirectional links to enhance thinking processes.






Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.






This open-source outliner helps you write, organize, and share your thoughts using local Markdown and Org-mode files. Manage tasks, build a digital garden, and integrate with various services for enhanced productivity.