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Privacy Policy

Last updated: 19 October 2026

Stay Green is built privacy-first. The app's job is to silently keep you showing as active on your own Mac or PC, and it does that with the lightest possible touch. It collects no behavioural data and shows no ads. To deliver updates and run licensing it makes a few narrow network requests - and here is exactly what they are.

What Stay Green does on your computer

To keep you marked active, Stay Green synthesizes the gentlest input macOS or Windows will accept:

  • One harmless keypress - the F20 key by default, an unused keyboard code that triggers nothing on a modern Mac or PC and does nothing visible. You can pick a different key, or none at all, in Settings.
  • A zero-distance mouse-move - the cursor doesn't actually move; it's the same signal your computer sees when you nudge the mouse.

Together these reset the system idle timer, which is what keeps Teams, Slack, Zoom, Discord and other presence-aware apps showing you as Available. That's the whole trick.

Just as important, what it never does:

  • Reads nothing. It does not read your screen, your documents, or any other app.
  • Logs no keystrokes. It is not a keylogger - it sends one synthetic keypress and records nothing you type.
  • No behavioural analytics, telemetry, or tracking. It doesn't record what you do, when you're active, or anything about your other apps.
  • No accounts. There's no sign-in.
  • Your settings stay local: in macOS UserDefaults on a Mac, and in a settings file in your Windows user profile on a PC.

What the app sends over the network

The app contacts the network for only two things:

  • Software updates. On a Mac, Stay Green checks our update feed at getstaygreen.com for new versions so it can update itself. On Windows, the version you download from our site checks our release page on GitHub, and the Microsoft Store version is updated by the Store. This is a standard update check - no personal information is sent.
  • Licensing. To run your free trial and, if you subscribe, your license, the app contacts our server and sends:
    • a device identifier - a one-way salted hash derived from your Mac's hardware ID (on Windows, the PC's machine ID). It is not that ID and can't be reversed to identify you or your computer; it only lets us anchor a trial to a machine and tie a license to a single device.
    • your license key, if you've entered one.
    • a device name (your computer's name), so you can recognise which device you've activated.
    • the app version.

Stay Green also works offline. Once activated, it carries a 14-day offline grace window, so it keeps you green without an internet connection and only needs to check in again before that window lapses.

Payments

Subscriptions are handled by Creem, our payment provider and merchant of record. When you buy, Creem processes your payment and billing details under its own privacy policy - we never see or store your card details. We receive your email address and the license key issued for your subscription, so we can manage and validate it.

This website

  • Windows notify list. If you ask to be notified about the Windows version, we store the email address you submit, so we can email you once when it's ready - no name, no profile.
  • Trial reminders. If you ask for a reminder on the download page, we store your email address, which platform it is for, when you signed up, which emails we sent and when, and a one-way hash of your IP address (used only to stop abuse of the form; we never store the IP itself). We use it to send at most two emails: setup tips right away (with a button to confirm you asked for the reminder), and, only if you confirm, a heads-up the day before your 14-day trial ends. Then nothing. If you never confirm, we delete the record about a week after sign-up. Emails are delivered by our email provider, Resend. Every email has a one-click unsubscribe link. We delete the record 30 days after the reminder is sent, or within a day of you unsubscribing, whichever comes first.
  • Privacy-friendly analytics. We use Vercel's cookieless, aggregate page analytics to see which pages get visited. It sets no cookies, collects no personal data, and doesn't track you across other sites.
  • No ad trackers. We don't embed third-party advertising or cross-site trackers.
  • Unsubscribe anytime. Reply to any email or contact us and we'll delete your data.

Contact

Questions, or want your data deleted? Reach out via GitHub and we'll help.