Sirenetta Support

When you write, it helps to include

• Your macOS version (Apple menu > About This Mac) and the Sirenetta version (Sirenetta > About Sirenetta).
• What you did, what you expected, and what happened instead.
• A small sample file that shows the problem, if you can share one. Please remove anything private first.

Common questions

How does the free trial work?

Editing Mermaid diagrams inside Markdown files is free for 7 days of use. A day counts when a Markdown file is open in Sirenetta, so days you don't use the app are not counted. The banner above a Markdown document shows how many days are left.

What is free after the trial?

Everything except editing diagrams inside Markdown files. You can always open and view diagrams in Markdown files, create and edit .mmd and .mermaid files, use the templates, export to SVG and PNG, and use Quick Look. These are free forever.

What does the unlock cost, and is it a subscription?

It's a single one-time purchase, not a subscription. The price is $12.99 CAD. It unlocks editing inside Markdown files on every Mac signed in to the same Apple Account.

I bought it on another Mac, or reinstalled. How do I restore it?

Open the Sirenetta menu and choose Restore Purchases (or click the button in the banner). Make sure you're signed in to the same Apple Account in the App Store. If the app is already unlocked, that option isn't shown, because there is nothing to restore.

How do I get a refund?

Purchases are handled by Apple, so refunds go through Apple too: visit reportaproblem.apple.com and choose the Sirenetta purchase. Refunds are decided by Apple, not by us.

Does Sirenetta change anything in my Markdown file besides the diagram?

No. An edit changes only the code block of the diagram you are editing. Your text, headings and line endings stay exactly as they were, and nothing is written unless something actually changed.

Why doesn't the Quick Look preview show for my .mmd file?

Quick Look (the spacebar preview in Finder) needs Sirenetta's extension to be on: open System Settings > Login Items & Extensions > Quick Look and make sure Sirenetta is enabled. If another app that also previews .mmd files is installed, macOS may use that one instead. Turn the other one off there.

Which Macs and macOS versions are supported?

macOS 14 (Sonoma) or later, on Apple silicon and Intel Macs (Universal Binary).

What data does Sirenetta collect?

None. There are no accounts, no analytics and no tracking, and your files never leave your Mac. See the privacy policy.

Something else?

Write to support@sirenetta.app.