The shortest privacy policy you’ll read this year.

Effective July 12, 2026

What Hazelnut collects

Nothing. There are no accounts, no analytics, no crash reporting, no advertising identifiers, and no third-party SDKs. The app never connects to the internet.

Where your data lives

Everything you log — feedings, sleep, diapers, photos, your child’s profile — is stored in a database on your device. It is never transmitted to the developer or anyone else. Deleting the app deletes the data.

Backups and exports

Export Backup creates a JSON file on your device that you control completely — where you save or send it is up to you (Files, iCloud Drive, AirDrop). Hazelnut never uploads it anywhere itself.

Device-to-device sync

Hazelnut can optionally sync between two phones directly (peer-to-peer, over local wireless). Data travels only between your own devices — no server, no account, and nothing passes through the internet. Sync is off unless you turn it on.

This website

Sets no cookies, runs no analytics, and loads nothing from third parties. Our hosting provider (Vercel) may keep standard server access logs to operate the service; we don’t add anything on top.

Contact

A contact address will be published here before release.

Changes

If the policy ever changes, the change will be visible in this page’s history and the effective date above.