Privacy

Last updated 14 November 2026. Draft, pending review.

The app

Curtain Call has no analytics and no upload service. Window snapshots live only in memory on your Mac, just for the animation; they are never saved or sent anywhere. Window titles are read only in memory, to match your own skip rules. Close History (app, time, window size and outcome) is stored on your Mac for 7 days and can be cleared or turned off.

The free version makes no network requests at all.

License activation

When you unlock the full version, the app sends your license key and a one-way hash of your Mac’s hardware identifier to our license service at api.curtain-call.dev. The identifier itself, your name and your Mac’s name are never sent. The app renews the activation about once a week by sending the signed activation back.

The license service stores your license key, the hashed identifiers of the Macs using it, and when each seat was activated or moved.

Purchases

Payments are handled by Paddle, our reseller and merchant of record. We never see your card details. From Paddle we receive your email address, the order number, the quantity and the country of the purchase. We use the email address to send your license key and to answer support requests, and for nothing else.

This website

This site sets no cookies and uses no analytics or advertising trackers. It is hosted on Cloudflare, which processes IP addresses to deliver pages and to protect against abuse. The purchase page loads Paddle’s checkout.

Retention and your choices

License records are kept for as long as the license exists, because they are needed to activate your Macs again. You can ask us to delete your records at any time; a deleted license can no longer be activated.

Contact

Write to support@curtain-call.dev.