Saturn

$29 once, not a subscription

Saturn is bought a single time and is then yours. No subscription, no account, and nothing that expires.

$29 is a launch price and will become $49. Buying now keeps the lower one permanently.

What the purchase includes

  • The app, permanently. It never stops working, never phones home, and never expires.
  • Every 1.x update free — features, fixes, and macOS compatibility.
  • Free security updates for 5 years from the day you buy. The exact end date is printed on your licence.
  • All of your Macs on one licence, for one person.
  • 30-day refund, no questions asked.
  • Version 2.0 at about half price if it ever ships — and free if you bought within six months of it.

The trial, and what happens after it

Saturn is free and complete for 14 days. No card, no account, no sign-up — download it and it starts.

If the trial ends and you have not bought, Saturn becomes read-only rather than locking you out. Every note stays open, searchable, exportable and copyable; what stops is writing new text. Your notes were never inside Saturn to begin with — they are Markdown files in your own folder, and they stay exactly as reachable as they were before you installed it.

That asymmetry is deliberate. Software that holds your writing hostage to a payment is the thing this app is arguing against.

Support and security updates

Every licence carries a support end date, at least 5 years after purchase, and it is shown to you before you pay and printed on the licence itself.

Within that period, security updates and macOS compatibility fixes are free — including after any future major version has shipped. A paid upgrade may gate new features. It will never gate a security fix.

Payment is handled by Stripe, which is the merchant of record. Applicable tax is calculated and shown at checkout. We never see your card details.

Try it first

Nothing here needs to be decided today. The trial is the whole app.

Requires macOS 15 (Sequoia) or later. Questions before you buy — support@saturnnotes.com.