Eva Cycle : Period Tracker

Private Period Tracker

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Track your cycle with complete privacy. All data stays on your device — no cloud, no servers, no subscriptions. Eva Cycle is the privacy-first menstrual cycle tracker that keeps everything on your device — forever. No accounts. No cloud. No data collection. Your most personal health data stays exactly where it belongs: with you. SMART PREDICTIONS Eva Cycle uses a Bayesian statistical algorithm that learns from your own cycle history to predict: • Your next period start date (with confidence intervals) • Your estimated ovulation window • Daily conception probability The more you log, the smarter and more personalised your predictions become. DAILY LOGGING Track everything that matters to you: • Menstrual flow intensity (light, medium, heavy) • Mood (happy, calm, energetic, sad, irritable, anxious, tired) • Cervical mucus observations • Basal body temperature (BBT) • Pain levels • Intercourse & protection status • Free-form notes COMPLETE PRIVACY & SECURITY Eva Cycle was built from the ground up with privacy as the core feature — not an afterthought: • 100% offline — zero internet or server communication, ever • AES-256 encryption (SQLCipher) protects all your data on device • Biometric lock (Face ID / fingerprint) secures app access • One-tap emergency data wipe removes everything instantly • Encrypted backups with your own passphrase — we never see your key • No analytics, no tracking, no ads CALENDAR & HISTORY • Monthly and weekly calendar views • Full cycle history with statistics • See patterns and trends over time BACKED UP ON YOUR TERMS Export an encrypted backup file to your own storage at any time. Restore it on the same device or a new one using only your passphrase — no account required. ONE-TIME PURCHASE Eva Cycle is free to try for one full year. After that, a single one-time purchase unlocks Eva Cycle Premium permanently — no recurring subscription, ever.

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The developer, nguyen van sang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • nguyen van sang
    Size
    • 23.3 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    9+
    In-App Purchases
    Yes
    Copyright
    • © 2026 SSG Team
  • Developer Website
  • Privacy Policy

    • More by nguyen van sang

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