Your math notes, finally living up to your ideas.
Desktop editor for technical notes — KaTeX, cartesian planes, automatic fractions and A4 sheets. Linux only.
Currently available for Linux only. Windows support coming soon.
Everything you need for technical notes.
Visual math editor
Insert symbols with clicks, no need to write LaTeX
Symbol menus by subject
Math, physics, chemistry, discrete math, and more
Easy tables
Visual grid to insert and edit tables with one click
A4 sheet with pagination
Automatic page breaks, numbered
Flow mode
A single continuous sheet with no interruptions
Cartesian plane
Numbered axes, grid snapping, piecewise functions
Ruler, protractor, and set squares
Draw lines and 45°/60° angles directly on the plane
Automatic fractions
Type 7/8 + space and it stacks automatically
Built-in KaTeX
Formulas rendered in real time
Mermaid diagrams
Flowchart, sequence, and state diagrams, written or generated
Fonts and sizes per selection
Change typography and size like in Word
2 or 3 columns
Word-style layout, with per-column deletion
Floating sticky notes
Pinned to the page, for quick reminders
Draggable blocks
Reorder paragraphs and tables like in Notion
Export to PDF
No watermarks, faithful to the design
Export to Word, Excel, and PowerPoint
Bring your notes to Office formats
Saved as Markdown
Readable .md files, editable externally
From zero to notes in three steps.
Create a notebook
Organize by subject and semester
Write with superpowers
KaTeX, tables, planes, automatic fractions
Export whenever you want
Printable PDF or .md to keep going in any editor
Free. Local. Yours.
AppImage
Native desktop app for Linux, no installation required
Automatic updates
The AppImage stays up to date without you doing anything
Helecho is under active development.
Upcoming versions may include new features and interface changes. What you see today is not the final product.