Ovuly: Ovulation Cycle Tracker

Smart Period & Fertility Log

Only for iPhone

Free · In‑App Purchases

iPhone

Make sense of your cycle. See how your cycle affects your mood, energy, and symptoms before it catches you off guard. Most period trackers guess your next period from calendar averages. Ovuly pulls wrist temperature shifts, heart rate variability, resting heart rate, and sleep data from Apple Health. Predictions sharpen with every cycle you track. WHAT MAKES OVULY DIFFERENT Biometric-Powered Predictions Ovuly detects your temperature's biphasic shift and HRV changes to pinpoint ovulation and adjust your predicted period date. The more you wear your Apple Watch, the sharper the predictions get. Your Data, fully secured by Apple No account. No Ovuly servers. Your cycle data is stored in your own iCloud account and syncs across your devices with end-to-end encryption. Ovuly reads biometric data from Apple Health to power smarter predictions. We will never sell your data — we don't even have access to it. Clean, Focused Design Log your flow, symptoms, and mood in seconds. No social feeds. No 100-category checklists. You get a clear dashboard, a calendar, and insights that matter. OVULY PLUS Stop guessing and start planning — Ovuly Plus helps you understand your body so you can work with your cycle, not against it. - Know exactly where you are in your cycle — one glance at your dashboard tells you your day and phase - Stop being caught off guard — get accurate period, fertile window, and ovulation predictions that improve with every cycle - Log how you feel in seconds, not minutes — track flow, spotting, symptoms, mood, and notes without endless checklists - Understand your patterns — see why you felt tired or why your mood dipped, backed by your own cycle data - Plan ahead with confidence — a color-coded calendar shows upcoming periods and fertile windows at a glance - See the bigger picture — track how your cycle lengths change over time so you notice shifts early - Work with your body, not against it — see how your heart rate, temperature, HRV, and sleep shift across each phase so you can plan workouts, rest days, and big days accordingly - Let your Apple Watch do the work — your wrist temperature, HRV, heart rate, and sleep data feed smarter predictions automatically - Never be surprised again — get a heads-up before your period and fertile window so you're always prepared - Look 12 months ahead — see your predicted cycles for the full year so vacations, events, and plans aren't a guessing game BUILT FOR PRIVACY No account, no email, no Ovuly server. Your cycle data lives in your own iCloud account with end-to-end encryption — only you can read it. Ovuly reads biometric data from Apple Health to power predictions, and can write menstruation and spotting data back (export feature). Both iCloud sync and Apple Health are optional. Your data belong to you, not to us. We will never sell your data. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ovuly.app/privacy

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

Ovuly now speaks German, French, and Spanish! The whole app, including the widget, is fully localized. You can now also export your cycle data and delete all your data directly from Settings, giving you complete control over your cycle history at any time.

Version 1.1.3

The developer, Clemens Siebler, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data

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
  • Clemens Siebler
Size
  • 8.3 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 26.0 or later.
  • iPhone
    Requires iOS 26.0 or later.
  • Apple Vision
    Requires visionOS 26.0 or later.
Languages
English and 3 more
  • English, French, German, Spanish
Age Rating
13+
In-App Purchases
Yes
Copyright
  • © 2026 Clemens Siebler
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

    More by Clemens Siebler

    You Might Also Like