Privacy
Designed with privacy in mind
Focus should feel calm, not surveilled. Here's exactly what Sandcastles does and doesn't do.
No screen reading
Your focus buddy never reads your screen, your documents, or your messages.
No selling your data
No ads, no data brokers, no tracking-for-profit. Ever.
Nothing raw shared
No raw app or site history is shared with friends.
How it actually works
The short version
What it uses to tell focus
To know whether you're with your task, Sandcastles looks at the name of the app or website that's active — like "VS Code" or "docs.google.com". That's it. It never reads the contents of your screen, files, or messages.
What stays on your Mac
Your raw activity, the task names you type, and your detailed focus history live locally on your Mac. They're yours — they aren't uploaded just to use the app.
If you build with friends
Coves and friends are opt-in. When you choose to connect, Sandcastles syncs only a gentle, privacy-filtered summary — coarse things like a streak or focused-minutes — never your raw app/site history or task details.
Sandcastles is in private beta, so some details may evolve as we build ~ but the principle won't: your focus stays yours.
Focus with peace of mind
Join the early access list and start building your coastline today!
Get early accessNo spam ~ just launch updates and early invites.