Jeejee: Markdown, LaTeX & Ink

Jeejee brings the ways you write together: jot things down in Markdown, typeset beautiful math and reports in LaTeX, write by hand with Apple Pencil, and annotate lecture PDFs directly. Documents are stored where you choose. Markdown, LaTeX, CSV, plain text and PDF work with tools that support their formats; handwriting remains editable in .jeejee files.

Made for students, researchers and anyone in STEM: organize class notes, write lab reports and theses, work through equations and prepare for exams.

Markdown
• Side-by-side editor and preview that scroll together
• Headings, lists, to-dos, tables, code, quotes and images
• Inline and display math
• One-tap formatting for bold, links, lists and more
• Export to PDF or Markdown

LaTeX
• Built-in typesetting engine compiles to PDF right in the app, offline, with no TeX installation needed
• Typesets with XeLaTeX, so Unicode and Chinese text just work
• Recompiles as you edit and clearly marks error lines
• Source and PDF side by side

Handwriting
• Write with Apple Pencil on iPad: pen, pencil, highlighter, eraser, lasso and shape recognition
• Your three favorite colors and widths sit right in the toolbar
• Light and dark blank, ruled, grid and dotted paper, with multiple pages and page thumbnails
• On-page text boxes, image insertion and cropping
• Turn a PDF into an annotation copy and write on your slides, leaving the original untouched
• Share editable .jeejee files, PDF or page images; save page images to Photos on iPhone and iPad

Files
• Local, iCloud and System Folder locations; connect external folders supported by your system and file provider
• List, card and icon views, with icons that show each document's content
• Recents, Favorites, drag and drop, and restoration from Recently Deleted

Designed for iPhone, iPad and Mac
• On iPad, a resizable sidebar stays docked while browsing and steps aside when you open a document
• On Mac, multiple windows, a native sidebar and keyboard shortcuts
• Seven editor themes with Dark Mode

Free, with optional support
Jeejee's core features are free forever, with no ads. If it helps you, you can buy the developer a cup of tea in Settings > Support Jeejee. Tips don't unlock anything; they simply support ongoing development.

Privacy
Jeejee does not track you. Document contents, file names and accounts are never sent to the developer; only anonymous crash reports and usage statistics are collected to improve the app.