Your cycle, your data, your device.
AI-powered health insights that never
leave your phone. Ever.
Log your cycle and let on-device AI learn your patterns. Cylla predicts your next period, fertile window, and PMS days with improving accuracy over time.
Have a health question? Ask Cylla's AI directly. Get thoughtful, contextual answers based on your personal data — all processed on your device, never sent anywhere.
Track symptoms, moods, energy levels, and more. The AI identifies correlations in your data that you might miss — like how sleep affects your cycle patterns.
Cylla's AI analyzes months of your data to surface meaningful patterns. Understand your body's rhythms with insights personalized to your unique biology.
Your most intimate health data deserves the strongest protection. Cylla runs completely offline — no accounts, no cloud, no servers. We physically cannot access your data.
Cylla is a health companion, not a doctor. AI insights are for personal awareness only. Always consult healthcare professionals for medical decisions.