The app
- Your travel timeline and day counts are stored on your device only. No account is required, and none exists.
- Location data is processed on the device to build the timeline; it is not sent to our servers.
- Backup is opt-in and goes to your own iCloud Drive — your iCloud, your keys, not our storage.
- The authoritative, itemized record of what the app collects (and what it does not) is Apple's standard App Privacy label on the App Store page.
This website
- day31.app is a static site. It serves pages; it has no accounts, no logins, and no analytics of its own.
- The calculator tools save your inputs in your own browser (localStorage) so they survive a reload. They never leave your device, and clearing your browser's site data deletes them.
Questions
Write to contact@day31.app and we will answer plainly.
Nomikos Inc · Last updated 2026. If our practices ever change, this page and the App Store privacy label change with them.