Your Cycle. Your Health.
Uncompromised Privacy.
The next-generation menstrual and body symptom tracker where your intimate health data is mathematically sealed on your device. No ad networks, no tracking SDKs, zero third-party access.
Built with Privacy as the Foundation
Engineered for women who value digital sovereignty and absolute medical privacy.
Zero-Knowledge Vault
All sensitive logs, symptoms, flow data, and notes are encrypted with military-grade AES-256-GCM. Decryption keys are stored strictly in your device's Secure Enclave.
On-Device Predictions
Advanced statistical cycle modeling, median cycle variance, and symptom pattern recognition are computed locally on your iPhone without transmitting unencrypted data.
Local-First & Discreet
No mandatory cloud account required. Use a fast local account right on your device, with discreet app disguise options and complete hardware-level privacy.
Important Medical & Legal Notice
CycleCipher is not a contraceptive device or birth control method. The app provides statistical estimates based on user-entered historical data and must never be used to prevent pregnancy or as a substitute for professional medical advice, clinical diagnosis, or gynecological care. Please review our complete Terms of Use & Medical Disclaimer before using the app.