Lattics vs SiYuan

Lattics is a knowledge management and writing app for researchers, writers, and other knowledge workers. Its card library lets users organize, tag, and search small units of knowledge, then place them in project outlines. Articles and cards can be linked across projects with inline references and bidirectional links. For visual planning, the Graph offers Mind Map, Plot of Story, and Aerial views, alongside a timeline for story design, historical research, and project management.

Writing and research features include AI help with translation, proofreading, rewriting, creative writing, and consultation; bibliography generation; more than 8000 CSL citation styles; and journal layout templates. PDF tools support annotation and translation in 92 languages while preserving original formatting. Exports include PDF, Word, TXT, Markdown, PNG, and ePub. Lattics runs on web, Windows, macOS, and iOS, and works offline. Content is stored locally by default without registration or login; users may choose third-party cloud sync with end-to-end encryption. It offers a free plan, with Basic limits of 3 PDF translations and 3 OCR recognitions per 24 hours, plus 50 graph and timeline nodes per project.

SiYuan is a personal knowledge management system for building a linked collection of notes. It supports Markdown, block-level references and bidirectional links, and organizes content into blocks with more than 20 block-level and more than 10 span-level element types. Backlinks can be filtered and searched; relationship graphs are available across a notebook and at block level. Databases support relations, rollups and templates, while flashcards use the FSRS spaced-repetition algorithm. Its AI feature connects to OpenAI for writing continuation, translation, summaries, brainstorming and grammar or spelling corrections. SiYuan supports offline access, and the maker describes multi-device synchronization as incremental and end-to-end encrypted. It is available on Windows, macOS, Linux, iOS, Android and the web, with a Chrome/Edge extension, API and Docker self-hosting. The maker says data stays under the user's control on their device. Free access is free; PRO Features is listed at $64 a month with lifetime-use wording, and Subscription at $148 a month with 8GB cloud storage.