FoldRender is a native Android Markdown renderer built for the Galaxy Z Fold 7. It parses CommonMark + GitHub-flavored Markdown to a native block list — so tables, task lists, front matter, mermaid diagrams, LaTeX and callouts render crisply, and a 5 MB doc only composes what is on screen.
File tree on the left, the rendered document on the right. Fold the device and it collapses to a single reading column — the activity never restarts, scroll position never moves.
No browser text selection, no stylesheet fights. Markdown becomes native Compose blocks in a LazyColumn, so long documents stay smooth and folding is a pure relayout.
Tables, task lists, fenced code with syntax highlighting, mermaid, LaTeX math and callouts — the flavors you actually write in READMEs and notes.