Whether you’ve just started trying to conceive or your fertility journey is taking longer than you expected, Ava can help. It gives you the confidence to always know you’re trying at the right time, and the convenience to not have to think about it too much. Ava makes for a better, easier, more magical journey to conception for you and your partner. With Ava, you’ll get information about:
- Ovulation
- Fertile and non-fertile days: Clinically proven to accurately detect an average of 5 fertile days per cycle.
- Physiological stress
- Resting heart rate
- Sleep quantity and quality
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- Included in delivery: medical grade sensor pod, silicone bracelet, USB charging cable (can be connected to most mobile phone plugs), user instructions
- Suitable for a wide range of wrist sizes
- Designed in Switzerland, manufactured in Europe
- Biocompatible materials
- FDA Class 1 medical device
- Works with the Ava app for iOS (Android App available late 2016).
If you get pregnant or change your mind before Ava ships, we’ll cancel your order and refund your credit card, no questions asked.
Shipping outside the US subject to regulatory approval. No current estimate for non-US shipping.
- iPhone® 4S/5/5C/5S/6/6 Plus (iOS 9.0 or later)
- Android coming late 2016
Battery Life & Water Resistance:
- Battery Life: 12 hrs (rechargeable)
- Splash and sweat proof
Know your body.
We created Ava to help women who wanted to get pregnant find their most fertile days. We were surprised to find that women who weren’t trying to conceive were just as interested in Ava.
It makes sense. Women who want to get pregnant go through all kinds of effort to track the changing hormone levels of their cycles. They take their basal body temperatures every morning to look for the small spike that signals ovulation has occurred. They test for luteinizing hormone in their urine, which signals fertility. They check their vaginal discharge daily.
Why should this empowering self-knowledge be confined only to pregnancy? Ava makes the process of tracking your menstrual cycle easy enough that anyone can do it—not just women who are trying to get pregnant.
And when you are ready to get pregnant, thanks to Ava, you’ll know exactly when to try. Making a baby requires you learn how reproduction works all over again, but this time, in a more personal way. What happens in your cycle? Do you ovulate on the later side? How many fertile days do you have? The unique logic of your menstrual cycle suddenly becomes a matter of profound importance.
With Ava, you can…
- See how your changing hormone levels impact your wellbeing throughout the month
- Learn how your cycle works so that when you want to get pregnant, you know exactly the best time to try
- See how much—and how well—you sleep each night, with data about deep sleep, light sleep, and total hours slept
- Track your body’s stress levels—not just emotional stress that you feel, but physiological signs of stress that affect you whether you realize it or not
- Gain insight about your menstrual cycle
The Science Behind Ava
Ava has been clinically tested in a year-long study at the University Hospital of Zurich under the lead of Prof. Dr. Brigitte Leeners, the leading expert on the mathematical modeling of menstrual cycles. Ava was found to identify an average of 5.3 fertile days per cycle—more than both the temperature method and ovulation sticks.
What Ava Measures
Most people think of heart rate as the average number of beats per minute, but your heart rate changes from beat to beat. HRV measures this naturally occurring irregularity in heart rate. The more variation in the interval between beats, the lower your physiological stress level.
Ava measures the ratio between low frequency and high frequency waves in your heart rate. Scientific studies have shown that the HRV ratio is a good indicator to assess the balance between the sympathetic nervous system and the parasympathetic nervous system. An imbalance in these systems—usually when the sympathetic branch takes the upper hand—is associated with high physiological stress level and results in a high HRV ratio.
Estrogen and progesterone have an impact on HRV. The HRV ratio is increased during the luteal phase when progesterone peaks, compared with the follicular phase, when estrogen is high.
Normal HRV ratio varies widely from person to person, but by looking for an increase or decrease from your baseline HRV ratio, you can learn about your body’s physiological stress level. HRV ratio is complicated, but the important thing to remember that a higher HRV ratio indicates higher stress.
Average percentages for adults are 47 – 60 percent light sleep and 33 – 48 percent deep sleep + REM.
If you’ve ever had an elastic band around your finger and felt the blood flow being cut off, you’re already familiar with the process of perfusion. While you can limit perfusion with an elastic band, perfusion can also change naturally for different reasons. For example, your perfusion changes in order to keep you warm or cool you down. Estrogen and progesterone also have an influence on perfusion. Estrogen increases perfusion, while progesterone has the opposite effect.
As you have probably observed throughout your life, reproductive hormones have an impact on your skin. Your skin can change at different phases of the menstrual cycle, during puberty, and during pregnancy.
Heat loss is also related to your metabolic rate. The mechanism for the maintenance of the higher temperature during the luteal phase is still a matter of scientific discussion. Some researchers believe that reduced heat loss is responsible, while others believe that higher internal heat production (increased metabolic rate) is the cause.
