The short version
Sumform is being designed to work without an advertising profile. We do not sell personal information, and this public website does not currently use marketing cookies, advertising trackers, or account registration.
Website
Our hosting provider may process standard technical logs—such as IP address, browser information, and request timing—for security, delivery, and reliability. Sumform does not currently add analytics or cross-site tracking to this site.
Prototype
The retained browser prototype stores puzzle progress and preferences in local browser storage. That prototype state stays in the browser unless the player clears it.
iPhone app
The app stores puzzle progress and settings on the device. It may offer optional Apple services, including iCloud sync and Game Center, which are governed by the player’s Apple account choices and Apple’s privacy terms. This notice will be reviewed against the release build before public beta.
Questions
Privacy questions can be sent to hello@sumform.app.