Cadence Cycle Tracker

Private period predictions

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Cadence records every prediction it makes, then scores it against what actually happened, so you can see exactly how much to trust the next one. Cadence predicts your period, then tells you how wrong it was. Every prediction it makes is recorded and later scored against what actually happened. That error history feeds back into the next forecast as a bias correction, and you can inspect the accuracy record yourself whenever you like. Everything stays on your iPhone. No account, no sign-in, no servers, no analytics. Cadence makes no network requests of any kind, and its database is encrypted with iOS file protection. You can optionally sync flow and test results with Apple Health, or leave that off and keep it entirely local. WHAT YOU GET • A cycle ring showing where you are today and which phase you're in • A predicted window with an honest confidence level: high, medium or low, based on how variable your cycles actually are • An accuracy record showing how close each past prediction landed • Fast daily logging: flow, how you feel, and what your body is doing • Optional LH test logging, which confirms ovulation rather than estimating it • A month calendar marking logged, predicted and fertile days • A one-page PDF summary for a doctor's appointment, generated on device • Face ID or passcode lock • Light and Dark Appearance, following your system setting HONEST ABOUT UNCERTAINTY A new user sees “medium” confidence rather than a precise-looking date, because a handful of cycles is not enough data to claim precision. Predicted and fertile days are labelled as estimates, and only a logged LH test marks an ovulation as confirmed. Cadence is built not to present a guess as a fact. Cadence is a tracking tool. It is not a contraceptive or a medical device, and it does not diagnose anything.

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Cadence has been redesigned to look and feel at home on iOS. • Light and Dark Appearance, following your system setting • A new phase ring on the Today screen, with a marker for today • Quicker logging, with flow tiles that fill by level • Calendar days drawn as circles, with predicted days dashed • A new app icon Fixes: • Spotting no longer shows as a period day on the calendar • Feelings logged in the log sheet now appear on Today straight away

Version 1.1

The developer, OcuNecu, 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
    Ocu Necu
    Size
    1.8 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 26.5 or later.
    • iPhone
      Requires iOS 26.5 or later.
    • Mac
      Requires macOS 26.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.5 or later.
    Languages
    English
    Age Rating
    9+
    Copyright
    © 2026 Damjan Ivanac
  • Privacy Policy

    • More by OcuNecu

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