MojoPad typesets LaTeX math anywhere in a note, using KaTeX — inline formulas and full display equations. Like everything else, it runs entirely on your Mac, fonts and all — no account, no server, no internet.
Wrap an expression in single dollar signs for inline math — $e^{i\pi}+1=0$
renders right in your sentence — and double dollar signs for a centered block equation:
$$
\int_0^\infty x^2\,dx = \frac{x^3}{3}
$$MojoPad is careful about what counts as math: everyday prices like “it costs $5 and $10” stay plain text. And the / menu has Equation (a block) and Inline math to drop one in without typing the dollar signs yourself — handy on rich-text pages.
Click a block equation to open its editor — the LaTeX on top, a live preview below — then press Escape, ⌘Return, or Done to close it. Click an inline formula to edit its LaTeX in a quick box. A mistake renders in red, right where it is, so you can fix it in place.
On Markdown pages, math is simply $…$ and $$…$$ in the source, so it
round-trips cleanly and stays readable as plain text. And it's baked into your exports: equations
appear correctly in your PDF, HTML, and static-site exports (with the fonts embedded, so they
work offline anywhere), and as MathML in ePub — so they render in your e-reader too.