Bifolium: Markdown Reader

Bifolium reads and annotates Markdown, from your own files or straight from GitHub. Open a document on iPhone, iPad, or Mac and Bifolium reads it where it is, without importing or converting it. Bifolium detects the Markdown a document is written in and renders it correctly: CommonMark, GitHub Flavored Markdown, and Obsidian's flavor with wikilinks, callouts, and YAML frontmatter. Tables, images, footnotes, TeX math, and Mermaid diagrams render offline. Code is highlighted in more than 30 languages. Highlight a passage and note a thought beside it. Both are kept apart from the document, so reading never changes the file. Find them again across every document, or start from one highlight and see related passages from your other files. Matching runs on your device. Save GitHub repositories, public or private, as read-only snapshots you can read offline and refresh when you choose. On a…