Privacy Policy

Last updated: 2026-04-28

The short version

Coach Helix is built on a privacy-first architecture. Your DNA file is parsed on your phone and never uploaded. Your biometrics from HealthKit (HRV, sleep, steps, workouts) stay on your device. Anything sent server-side is anonymized into cohort labels with a minimum k-anonymity threshold of 50 users.

What we collect

• Email address — when you join the waitlist or create an account.
• Anonymous cohort labels — categorized SNP groupings, never raw genotype data.
• Aggregated coaching metrics — used to improve the coaching engine; tied to a random user ID, not to you.
• Analytics events — page views and product interactions via PostHog (no PII outside identified-only mode).

What we never collect

• Your raw VCF or DNA file.
• Your raw biometric time series.
• Your location (unless you explicitly opt in to the Restaurant Coach feature, in which case coordinates are used in-memory only).

How DNA is handled

Your genetic profile is parsed on-device by the HelixDNA library and stored in iOS Keychain with the kSecAttrAccessibleWhenUnlockedThisDeviceOnly attribute. It is excluded from iCloud backups by design and cannot be extracted from your device by us or anyone else.

Your rights

You can delete your account and all server-side data at any time from the iOS app. Email nick@coachhelix.com for any privacy questions.

This is a placeholder policy for the pre-launch waitlist. A complete legal policy will be published before iOS launch.