Privacy Policy

Last updated: 2026-05-02

Short version

Kern collects nothing. There is no account, no analytics, no tracking, and no server. Everything you enter — your start date, your habit name — stays on your device.

What data the app stores

Locally on your iPhone (in UserDefaults shared with the home-screen widget), Kern stores:

• The date you started
• A habit name (default: "alcohol-free")
• Your previous best streak length
• The most recent milestone you've celebrated

That's it. None of this leaves your device.

What we don't collect

• We don't have user accounts.
• We don't run a server.
• We don't use third-party analytics (no Firebase Analytics, no Mixpanel, no PostHog, no Sentry — nothing).
• We don't use ads or ad networks.
• We don't use any tracking SDKs.
• We don't read your contacts, calendar, photos, or location.

Notifications

Kern schedules local notifications to remind you of upcoming milestones (Day 7, 30, 90, etc.). These notifications are scheduled on your device by your iPhone — they are not sent from a server. You can turn them off in iOS Settings at any time.

App Store

When you download Kern from the App Store, Apple may collect information per its own Privacy Policy. We do not receive that data from Apple.

Contact

Questions: support@suprun.ca

Changes

If this policy changes, we will update the date at the top and post the new version at this URL.