Ava Fertility Tracker

Whether you’re struggling to conceive or just starting on the journey to conception, Ava helps you achieve your baby goals faster than other methods.

Properly timing intercourse can double a woman’s chances of conception,1 but as many as 75% of couples get that timing wrong.2 Why? Because the fertile window is more than ovulation day. It’s also the 5 days leading up to it, with peak fertility 2 to 3 days before ovulation.

Ava is clinically proven to identify your unique 5-day fertile window as it’s happening—letting you know when you’re ready to conceive up to 4 days earlier than LH tests, and with 50% more precision than the calendar method used by typical period-tracker apps.3

Go beyond ovulation. Take control of your cycle and make every fertile day count.

Syncs with iPhone and Android. Tested for cycles of 24 to 35 days.


US orders: Your Ava will arrive in 3-5 business days.

Canada orders: Your Ava will arrive within 10 business days.  Your order is shipped with FedEx and unfortunately we cannot deliver to P.O. Boxes.

EU/UK orders: Your Ava will arrive in 3-5 business days.

Switzerland orders: Your Ava will ship in 3-5 business days.

We are currently shipping to the US, Canada, select countries in the European Union (EU28), Switzerland and Liechtenstein. To find out when we’re shipping to your country, sign up here.

  • Included in delivery: medical grade sensor pod, USB charging cable, user instructions
  • Ava is adjustable and suitable for a wide range of wrist sizes
    • Minimum: 12.5 cm / 4.9 in
    • Maximum: 20.5 cm / 8.1 in
  • Designed in Switzerland, manufactured in Europe
  • Biocompatible materials
  • FDA cleared and CE certified
  • Ava works with the Ava app for iOS and Android
  • Ava is not a contraceptive and cannot be used to prevent pregnancy
  • Not for pacemaker wearers
  • Ava works with the Ava App that requires iOS 10.0+ / Android 5.0+ or higher. The Ava App is optimized for iPhone® 6 and newer and major Android manufacturers.
  • Battery Life: 12 hrs (rechargeable)
  • Ava is neither waterproof nor water resistant. Please ensure the Ava device does not come into contact with any liquids.

Ava is non-returnable and non-refundable. In the case of material defects covered by our two-year limited warranty, please contact Customer Support and we’ll be happy to help.

See who's wearing Ava

What makes Ava different?

  • Convenience

    Wear the bracelet at night, sync in the morning. Ava does the rest.

  • Real-time data

    See your cycle phases and fertile window as they’re happening.

  • More time to conceive

    Plan intercourse or insemination by knowing a full 5 fertile days.

  • Backed by science

    Have confidence that Ava is clinically proven and peer reviewed.

  • Not just fertility

    Track sleep, stress, and symptoms for an overview of your health.

Ava Reviews

Is Ava right for me?
The below is intended as a guideline. For more detailed questions about whether Ava is right for you, visit our FAQs and consult with your physician.

  • Yes: Your cycle is regular and between 24–35 days

    Ava will work with cycles slightly shorter or longer than the 28-day average, provided they are of consistent length.

  • Yes: You have endometriosis

    Ava can be used with endometriosis, unless there is severe scarring that interrupts ovulation.

  • Yes: You're using an alternate conception method

    Ava can be used to time conception methods other than intercourse, e.g. artificial insemination.

  • Yes: You’re breastfeeding

    Ava can be used while breastfeeding once your cycle has returned.

  • No: You’re taking hormonal birth control

    Ava works by sensing physiological changes related to your natural hormone levels.

  • No: Your cycle length varies significantly from month to month

    Ava has not been tested on women with irregular cycles that vary widely in length.

  • No: You're looking for contraception

    Ava has not been designed nor tested for pregnancy prevention.

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