CellaLonga
Fasting isn't a diet. It's your longevity lever — measured honestly, owned for life.
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Privacy Policy
Last updated: August 9, 2026
CellaLonga has no backend and no user account. There is nothing to sign up for, and nothing about you is ever transmitted to us or to any third party.
What stays on your iPhone, always:
- Every fast you start or complete, every feeling you log, and every manual measurement (weight, glucose, ketones) — stored locally on your device (Apple's SwiftData), never uploaded anywhere.
- If you choose to connect Apple Health (entirely optional — the app works fully without it), CellaLonga only reads sleep, heart rate variability, weight and glucose to enrich your metabolic timeline and your personal correlations. It never writes to Health, and that data never leaves your device either.
What we don't have:
- No analytics SDK, no crash reporter, no advertising identifier, no tracking of any kind.
- No account, no login, no email collection beyond what you choose to send us directly.
In-app purchase: the one-time "Nerd Mode" unlock is processed entirely by Apple through StoreKit. We never see your payment details — Apple's own privacy policy covers that transaction.
CellaLonga is not directed at children and is not designed to collect data from anyone, of any age — there is simply no collection mechanism in the app.
Because nothing is collected or transmitted, there is no server-side data to access, export, or delete on request — everything already lives only on your device, under your control. Deleting the app deletes everything.
Medical Disclaimer
CellaLonga is informational only and is not medical advice. It does not diagnose, treat, or prevent any condition. Consult a clinician before attempting extended fasts, especially if you take medication or have a medical condition.