Privacy Policy.

Last updated · May 23, 2026

Drain is a macOS app that desaturates color in apps you choose. This policy explains exactly what Drain does and does not do with your data.

The short version

Drain does not collect, transmit, or store any of your personal data on any server. Everything Drain knows about you stays on your Mac. There is no analytics, no tracking, no telemetry, and no account.

What stays on your device

Drain stores a small set of preferences locally on your Mac using macOS's standard UserDefaults system. None of this leaves your device:

• Whether Drain is turned on
• Your drain mode (drain only listed apps, or drain everything except listed apps)
• The bundle identifiers of the apps you have added to your list (e.g. com.apple.Safari)
• Whether you have completed onboarding and seen the premium screen
• Your dock / menu bar visibility preference
• Your install date, a counter of app launches, and whether you have been shown a review prompt — used only to decide locally when to ask you for an App Store rating

You can erase all of this at any time by uninstalling Drain.

What Drain observes while running

To know when to apply or remove the color filter, Drain listens for macOS notifications about which app is currently in the foreground. This information is read only in memory, used to decide whether the current app should be drained, and is never written to disk or transmitted anywhere.

Drain is distributed through the Mac App Store and runs inside Apple's App Sandbox.

How Drain applies the filter

Drain does not modify other apps or capture their contents. To desaturate the screen, Drain triggers macOS's built-in Color Filters accessibility feature by running one of two Apple Shortcuts that you import during onboarding (“Turn Color Filters On” / “Turn Color Filters Off”). The actual color change is performed by macOS, not by Drain.

Subscriptions and payments

Drain's premium subscription is sold and processed entirely through Apple's App Store using StoreKit. Drain does not see, receive, or store your name, email, payment method, or App Store account details. Subscription status is verified locally using Apple's signed receipts.

Apple's handling of your purchase is governed by Apple's own privacy policy: apple.com/legal/privacy

Children

Drain is not directed at children under 13 and does not knowingly collect any information from anyone, including children.

Links to other services

The app links to Apple's standard subscription terms and to this privacy policy. Following those links sends your request to the linked party (Apple or our website host), governed by their respective privacy policies.

Changes to this policy

If this policy changes, the updated version will be posted at draincolor.app/privacy with a new “Last updated” date. Material changes will also be surfaced inside the app the next time you open it.

Contact

Questions about this policy? Email: hello@draincolor.app