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Prevention - Relationship and family

Clue Period, Ovulation Tracker

With the Clue app, you can accurately track your menstrual cycle and predict your next period. In addition, the app encourages you to gain an understanding of your own body.

Red flower against a white background The Clue app is a comprehensive solution for women who want to monitor their menstrual cycle. With the Clue app, you can easily record your menstrual cycle, identify your most fertile days, predict your next period and track your pregnancy. The app also provides information on health and sexuality. It is based on an algorithm. This means that the more regular and detailed the user tracks, the more precise the predictions become. The app encourages you to gain an understanding of your own body and recognise patterns in your menstrual cycle, without serving as a primary contraceptive method.

Download it and put it to the test


Further descriptions

  • Available languages
    • English
    • French
    • German
    • Italian

    Other languages available

  • Developer
    BioWink GmbH
    Berlin, Germany
  • Costs and features

    Costs for the basic version*:

    • CHF 0.00

    Contents of the basic version:

    • Record menstruation, well-being, symptoms and physical changes
    • Estimated prediction of ovulation and the next period
    • Limited access to information articles

    Costs for the premium version*:

    • CHF 40 per year (Apple)
    • CHF 10 per month (Apple)
    • CHF 43 per year (Google)
    • CHF 9.50 per month (Google)

    Contents of the premium version:

    • Clue desire to have children and Clue pregnancy mode
    • Cycle prediction up to six months in advance
    • Access to all information articles
    • Premium support from the Clue team

    *The costs for the apps are regularly checked and updated. However, changes may occur at short notice.

  • Data protection
    • EU data protection laws
    • Health data relating to menstrual cycle is stored on your smartphone and transferred in encrypted form to a external location (usually a cloud).
    • Health data may be shared with third parties for specific purposes.
  • Exchange of data with other apps
    Yes (Apple Health)

Checklist for choosing your health apps

Use our checklist to check the quality and trustworthiness of the health apps of your choice.