Lumen collects no data of any kind. It has no accounts, no analytics, no tracking, and makes no network connections. Your photos are read from the folders you open and never leave your Mac.
The whole policy
Your photos stay on your Mac. Lumen only reads the folders you explicitly open or drop onto it, and everything it does - viewing, editing, converting - happens entirely on your device.
Purchases are handled by Apple. The Lumen Pro unlock is processed by the App Store on your device. We receive no personal information, no payment details, and no purchase records tied to you.
Nothing is transmitted. Lumen makes no network requests - there is no server to send anything to.