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Ava Bracelet Reviews: Can it help you get pregnant?

We investigate Ava’s fertility tracker bracelet to see how effective it is.

Last Updated: Mar 4, 2021

Ava bracelet reviews

If you’re an aspiring parent, you know the difficulties of conception aren’t easy. According to the CDC, 6% of married women aged 15-44 in the U.S. are unable to conceive after one year of trying, and almost 9% of men aged 25-44 reported that they or their partner saw a doctor for advice, testing, or treatment for infertility during their lifetime.

Several apps and devices have emerged to assist aspiring parents, but most of these products require users to input data daily for effectiveness. Ava takes out the guesswork. It is a Bluetooth-enabled device worn like a Fitbit that records several factors related to ovulation while you sleep. In the morning, Ava uploads this data to your smartphone, allowing you to determine your most fertile days of every month.

Is Ava effective? Read our full review below to find out the pros, cons, and details of this unique new “fertility bracelet” and decide if it’s right for you.

Review Summary


  • Easy to use
  • Scientifically proven to determine ovulation with 89% accuracy
  • Strong community of users and social media presence
  • Monitors seven diagnostics for higher efficacy
  • Six-month or 12-month money-back guarantee (depending on model)


  • Takes time to predict your cycle accurately
  • Requires a smartphone with Bluetooth capability
  • Not recommended for those with PCOS (polycystic ovary syndrome)

Bottom line

For our assessment of Ava, we compared the device with three other methods for ovulation tracking, including the temperature method, LH tests, and period tracker apps. Among these, Ava was the best at detecting the beginning of a woman’s five-day fertile window, and it was the most convenient method to use. While Ava can’t change biological factors related to infertility, it addresses the most common: incorrect timing for conception. With Ava, women become experts of their own bodies and cycles, significantly increasing the possibility of conceiving.

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Ava offers a clinically tested bracelet that tracks the five best days you are likely to conceive while syncing to your phone and presenting an analysis of various important factors.

Ava has three different fertility bundle bracelet options. Two of these bundles offer a six-month and a 12-month money-back guarantee and free shipping to ensure you are delighted with this highly successful product.

Why you should trust us

Innerbody Research recently celebrated its 20-year anniversary online. Over the past two decades, we have helped tens of millions of readers make more informed decisions involving staying healthy and living healthier lifestyles.

We extensively test each health service we review. We try our best to give you, our readers, an unbiased exploration of at-home health services, free of marketing jargon or gimmicks. We evaluate the service based on our adherence to quality, the latest medical evidence and health standards, and a simple question: would we buy the product or service ourselves if it weren’t part of our job, and would we recommend it to family and friends?

Additionally, this review of Ava, like all health-related content on this website, was thoroughly vetted by one or more members of our Medical Review Board for accuracy.

What is Ava?

Founded in Switzerland in 2014 by Pascal Koenig, Philipp Tholen, Peter Stein, and Lea von Bidder, Ava is an innovative technology company focused on women’s reproductive health. Ava’s flagship product is the Ava bracelet, which has been clinically tested and peer-reviewed to demonstrate effectiveness at detecting menses-driven physiological changes in the body, thus predicting fertility cycles.

The Ava bracelet collects data 25 times per second while you sleep. It then syncs this data with your smartphone via Bluetooth to analyze it and pinpoint your five-day window of fertility each month. In this way, Ava can help you understand your cycle whether you’re trying to start a family, already pregnant, or just curious to know more about your body.

An added bonus: Ava demonstrates its dedication to women’s reproductive health by committing 20% from every bracelet’s sale toward research and development in this field.

How does it work?

Ava’s device measures five main physiological factors to map out a woman’s ovulation cycle and alert her of her five most fertile days each month. Unlike LH tests and basal body temperature monitoring, Ava’s method informs you at the beginning of your fertile period and not after it has peaked or ended. It is also far more accurate than period tracker apps, which offer only a generalized guess at ovulation time.

The Ava bracelet and app work together to track your ovulation cycle by using the following diagnostics:

  • Skin temperature. A woman’s skin temperature decreases by approximately 0.2°C following menstruation. It then rises 0.4°C after ovulation and remains at this elevation until her next period begins. It is best to measure skin temperature while sleeping or immediately upon waking up, making Ava’s device excellent for this use.
  • Resting pulse rate. A woman’s resting pulse rate will drop by about 1.5 beats in the pre-ovulation phase and increase throughout the fertile window and post-ovulation phase.
  • Heart rate variability ratio. Women’s heart rates typically rise in the follicular phase and fall in the luteal phase.
  • Breathing rate. Breathing rates in women are lower at the start of the fertile window and higher in the late luteal phase.
  • Perfusion. Perfusion refers to the passage of blood through the circulatory system. In women, this rate will be lowest at the start of the fertile window and highest in the luteal phase and menstruation.

In addition to these five fertility-related factors, the Ava bracelet will also monitor movement while you sleep, giving you feedback on the quantity and quality of combined deep and REM sleep you’re getting at night.

It is important to note that Ava is tested and recommended for women with relatively regular cycles of 24-35 days. If your cycle varies significantly from month to month or you have PCOS (polycystic ovary syndrome), Ava is not appropriate for you. It is also not designed or tested as a method for pregnancy prevention.

Ava’s ability to predict your fertile window improves over time as its algorithm adjusts to your cycle. Several factors can cause short-term changes in the physiological parameters measured by the bracelet, including illness, stress, and alcohol consumption. Over time, Ava’s device forms adjustments for short-term fluctuations and presents a more accurate reading of where you are within your cycle.

Products and pricing

Ava sells its devices in three different product bundles. We opted for the Ava Plus bundle for our testing purposes, which is the most economical while providing a money-back guarantee. Ava’s bundles include:

  • The Ava Basic bundle is $259 and includes the Ava bracelet, in-app tracking, membership to the Ava online community, and free shipping.
  • The Ava Plus bundle is $299 and includes a 12-month pregnancy guarantee, the Ava bracelet and app, membership to the Ava online community, and free shipping. This bundle also provides an ebook copy of The Ultimate Guide to Getting Pregnant.
  • The Ava Premium bundle is $359 and includes a six-month pregnancy guarantee. It also consists of the Ava bracelet and app, membership to the Ava online community, free shipping, and The Ultimate Guide to Getting Pregnant ebook.

Ava ships to the U.S., Canada, select countries in the European Union, Switzerland, and Liechtenstein.

Getting started with Ava

Getting started with Ava is easy on its intuitive and user-friendly website.

  1. Get informed. Ava’s site offers a wealth of information on its products as well as fertility, infertility, and pregnancy. Try the link for “How It Works” for detailed information and articles on the science and technology behind Ava’s devices and the research that backs up its claims.

  2. Make a selection. Ava offers three bundles: Basic, Plus, and Premium. The primary difference between the bundles is the money-back guarantee. The Basic bundle does not provide a money-back guarantee, the Plus offers a 12-month guarantee, and Premium provides a six-month pregnancy guarantee (or your money back).

  3. Checkout. Ava accepts all major credit cards, FSA and HSA debit cards, and payments through the Swedish banking app Klarna if you are eligible. Shipping is free on all orders.

  4. Await shipping. Your Ava should arrive within three to five days after placing your order.

  5. Set up your Ava account. You’ll find the Ava app in the App Store for iPhone and the Play Store for Android. Once downloaded, open the app to set up your account. You’ll receive an activation link via email that will complete the setup. Before wearing your Ava bracelet for the first time, pair it with the app to achieve synchronization.

  6. Begin using Ava. You can begin wearing Ava on the first night after you’ve received it, no matter where you are in your cycle. It is important that you wear the Ava device consistently every night for your entire cycle.

  7. Assess your satisfaction. Depending on what bundle you purchased, you may be eligible for a six-month or 12-month pregnancy guarantee. If you have consistently used the Ava device during this time and have not yet conceived, contact Ava’s Customer Service Department to arrange for a return and refund.

Privacy concerns

Ava encodes all health data recorded by your Ava device with a proprietary protocol. Ava encrypts your personally identifiable information and stores it separately from health data. Your health data is anonymized and not shared with third parties. Ava has aligned its privacy policy with the standards of the EU General Data Protection Regulation (GDPR). Information collected about users of Ava’s website via cookies and other technology may be used to improve user interaction on the site and for communication services. You can deactivate or restrict the transmission of cookies by changing the settings of your internet browser.

Insurance, HSA, and FSA

If you have a benefits card associated with your HSA or FSA plan, you can use it to purchase an Ava device. You can check the FSA and HSA Eligibility Lists or contact your administrator to ensure you are covered. If you do not have a card associated with your account, simply print your receipt and submit a claim to your administrator for reimbursement.

Although Ava makes no mention of individual health insurance claims, you can always check with your administrator to see if you are eligible for a full or partial refund.

How we evaluate health products and services

At Innerbody Research, we customize our evaluation criteria depending on the type and nature of the health-related service or product. For Ava and other health products, we have five areas that we use for our evaluations, including:

Quality: How well does the company deliver its core service(s) to the customer? For testing services, does the company adhere to the latest and most advanced testing technologies and achieve a very high degree of accuracy? For non-testing telehealth services, is the quality of the service high enough that we would recommend it to loved ones without hesitation? If not, why not?

User-friendly: How intuitive and user-friendly is the service? Does the device, program, app, or website achieve a good degree of user-friendliness for its customers?

Value: Are you getting your money’s worth? Are there any hidden costs or charges? Does the company offer discounts?

Privacy: If health data is stored, will your data be stored securely? Are payments secure?

Customer support: Particularly in situations where ‘one size fits all’ doesn’t make sense, how well does the company help to make the service ideal for you

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