Card or Alipay
Checkout is handled by Stripe. The one-time lifetime license accepts both cards and Alipay; monthly and yearly subscriptions are billed to a card. Caitty never sees or stores your payment details.
Pricing
Start free. Go Pro when Markdown is part of your day.
The free editor covers everyday writing: live preview, fullscreen focus mode, the light theme, two saved documents, and Markdown export. Pro unlocks unlimited documents, premium reading themes, and polished HTML & PDF export — as a monthly or yearly subscription, or a one-time lifetime license. Pay by card or Alipay.
Free
$0forever
- Live preview with Edit, Split & Preview views.
- Full-page fullscreen focus mode.
- Up to 2 saved documents (local autosave).
- Light preview theme.
- Copy Markdown, copy HTML, download .md.
Pro Monthly
$3.99per month
- Unlimited saved documents.
- Dark, Sepia & GitHub themes.
- Styled, self-contained HTML export.
- Print-ready PDF export.
- License key activation across devices.
- Cancel anytime.
Best value
Pro Yearly
$19per year
- Everything in Pro Monthly.
- Save over 60% versus paying monthly.
- Unlimited documents & all themes.
- HTML & PDF export.
- Cancel anytime.
Pro Lifetime
$39one-time
- All Pro features, forever.
- No subscription — pay once.
- Pay by card or Alipay.
- Unlimited documents, themes, HTML & PDF export.
- Reusable license key across devices.
How payment works
Secure checkout, reusable license, no lock-in.
Pro is meant for people who live in Markdown — developers writing docs, writers drafting posts, students taking notes. Payment is quick and your documents always stay yours.
Reusable license key
After payment you receive a license key tied to your checkout email. Use the Activate link on any device to unlock Pro again — handy when you switch browsers or computers.
Your files stay local
Free and Pro both keep documents in your browser and export plain Markdown and HTML. Your work is never trapped in a remote account.