Privacy Policy

Zelos · Atlas Labs — last updated 11 June 2026

What Zelos is

Zelos is a workout tracker and AI training coach, operated by Atlas Labs (“we”). This policy explains what data we process when you use the Zelos iOS app or getzelos.app, and why.

Data we collect

• Account — email address and name (from sign-up, or from Google / Apple sign-in).
• Training data — workouts, sets, reps, weights, programs, personal records, body metrics, and notes you log.
• Health data (optional) — if you grant HealthKit access on iOS: heart rate, active energy, and heart-rate variability (HRV). Used only for in-app features such as the Freshness score.
• Location (optional) — during outdoor cardio activities, if you grant permission, GPS is recorded and stored as a route line attached to that workout.
• Coach conversations — messages you exchange with the AI coach.

We do not run ads, do not sell data, and do not track you across other apps or websites.

AI processing (important)

The AI coach is powered by Anthropic’s Claude models. When you use coach chat, program generation, or training insights, we send your message together with relevant training context (recent workouts, personal records, body metrics, and health-derived signals such as HRV trends) to Anthropic’s API for processing. Anthropic processes this data to generate the response and does not use API data to train its models by default. If you do not want this, simply don’t use the AI coach features — tracking works fully without them.

Where data lives

• Database: Neon (PostgreSQL), hosted in the EU (Frankfurt).
• Application hosting: Render, EU (Frankfurt).
• AI processing: Anthropic (US) — only when you use coach features.
• Sign-in: Google / Apple, only if you choose those methods.
• Exercise images and videos are served from our exercise-content provider’s CDN.

Your rights

• Export — download everything we hold about you from Settings, or via GET /api/auth/export with your session.
• Deletion — delete your account in Settings; this permanently removes your account and all training, health, and coach data. Audit entries are anonymized at deletion.
• Access / correction — your data is visible and editable in the app itself.

Retention

Data is kept while your account exists and removed on deletion. Anonymized operational logs are kept up to 12 months.

Contact

Atlas Labs — privacy@getzelos.app

← Back to Zelos